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          Generalized Sum List Colorings of Graphs(joint
          work with Massimiliano Marangio and Margit Voigt).
 Discussiones Mathematicae Graph Theory.
 Doi:
          10.7151/dmgt.2174.
 
 
On the Chromatic Edge Stability Number of
          Graphs(joint work with Massimiliano Marangio and
          Nazanin Movarraei).
 Graphs and Combinatorics 34 (2018)
          1539-1551.
 Doi: 10.1007/s00373-018-1972-y.
 
 
A Note on Not-4-list Colorable Planar Graphs(joint work with Margit Voigt).
 The Electronic Journal of
          Combinatorics 25(2) (2018) #P2.46.
 
 
On the P-Sum Choice Number of Graphs for 1-Additive
          Properties(joint work with Massimiliano Marangio and
          Margit Voigt).
 Congressus Numerantium 229 (2017) 117-124.
 
 
Bounds for the Sum Choice Number(joint work
          with Massimiliano Marangio and Margit Voigt).
 Electronic
          Notes in Discrete Mathematics 63 (2017) 49-58.
 Doi:
          10.1016/j.endm.2017.10.061.
 
 
Sum Choice Number of Generalized Θ-Graphs
          (joint work with Christoph Brause, Massimiliano
          Marangio, Anja Pruchnewski, and Margit Voigt).
 Discrete
          Mathematics 340 (2017) 2633-2640.
 Doi:
          10.1016/j.disc.2016.11.028.
 
 
Proper Connection and Size of Graphs(joint
          work with Susan A. van Aardt, Christoph Brause, Alewyn P.
          Burger, Marietjie Frick, and Ingo Schiermeyer).
 Discrete
          Mathematics 340 (2017) 2673-2677.
 Doi:
          10.1016/j.disc.2016.09.021.
 
 
Sum List Colorings of Small Graphs(joint work
          with Massimiliano Marangio and Margit Voigt).
 Congressus
          Numerantium 227 (2016) 27-50.
 
 
Rainbow Connection Number Two and Clique Number(joint work with Philipp Krause and Ingo Schiermeyer).
 Congressus Numerantium 226 (2016) 155-163.
 
 
Lower Bounds on the Sum Choice Number of a
          Graph(joint work with Jochen Harant).
 Electronic
          Notes in Discrete Mathematics 53 (2016) 421-431.
 Doi:
          10.1016/j.endm.2016.05.036.
 
 
Sum List Edge Colorings of Graphs(joint work
          with Massimiliano Marangio and Margit Voigt).
 Discussiones
          Mathematicae Graph Theory 36 (2016) 709-722.
 Doi:
          10.7151/dmgt.1884.
 
 
Sufficient Conditions for 2-Rainbow Connected
          Graphs(joint work with Ingo Schiermeyer).
 Discrete Applied Mathematics 209 (2016) 247-250.
 Doi:
          10.1016/j.dam.2015.10.025.
 
 
Sum List Colorings of Products of Graphs(joint
          work with Massimiliano Marangio and Margit Voigt).
 Congressus Numerantium 223 (2015) 45-58.
 
 
Irregular Vertex Colorings of Cartesian Products of
          Paths and Cycles(joint work with Jens-P. Bode and
          Zuzana Moravcová).
 Congressus Numerantium 224
          (2015) 203-211.
 
 
Sum List Colorings of Wheels(joint work with
          Massimiliano Marangio and Margit Voigt).
 Graphs and
          Combinatorics 31 (2015) 1905-1913.
 Doi:
          10.1007/s00373-015-1565-y.
 
 
Hypohamiltonian Oriented Graphs of All Possible
          Orders(joint work with Susan A. van Aardt, Alewyn P.
          Burger, Marietjie Frick, and Ingo Schiermeyer).
 Graphs and
          Combinatorics 31 (2015) 1821-1831.
 Doi:
          10.1007/s00373-015-1561-2.
 
 
Generalized Fractional and Circular Total Colorings of
          Graphs(joint work with Massimiliano Marangio, Peter
          Mihók, Janka Oravcová, and Roman
          Soták).
 Discussiones Mathematicae Graph Theory 35
          (2015) 517-532.
 Doi: 10.7151/dmgt.1812.
 
 
Improved Sufficient Conditions for Hamiltonian
          Properties(joint work with Jens-P. Bode and Anika
          Fricke).
 Discussiones Mathematicae Graph Theory 35
          (2015) 329-334.
 Doi: 10.7151/dmgt.1804.
 
 
(P,Q)-Total (r,s)-Colorings of Graphs(joint
          work with Massimiliano Marangio, Anja Pruchnewski, and Margit
          Voigt).
 Discrete Mathematics 338 (2015) 1722-1729.
 Doi: 10.1016/j.disc.2014.09.012.
 
 
d-Strong Total Colorings of Graphs(joint work
          with Massimiliano Marangio).
 Discrete Mathematics 338
          (2015) 1690-1698.
 Doi: 10.1016/j.disc.2014.07.008.
 
 
Mathematik zum StudienbeginnSpringer Spektrum,
          Wiesbaden, 11. Auflage, 2014.
 
 
d-Strong Edge Colorings of Graphs(joint work
          with Massimiliano Marangio).
 Graphs and Combinatorics 30
          (2014) 183-195.
 
 
Grundy Critical Graphs(joint work with Jens-P.
          Bode).
 Congressus Numerantium 218 (2013) 141-147.
 
 
Fractional (P,Q)-Total List Colorings of Graphs(joint work with Peter Mihók and Margit Voigt).
 Discussiones Mathematicae Graph Theory 33 (2013) 167-179.
 
 
Grundy Numbers of Products of Paths, Cycles, and
          Stars(joint work with Jens-P. Bode and Ingo
          Schiermeyer).
 Congressus Numerantium 216 (2013) 65-72.
 
 
Rainbow Connection in Sparse Graphs(joint work
          with Jakub Przybyło, Ingo Schiermeyer, and Mariusz
          Woźniak).
 Discussiones Mathematicae Graph Theory 33
          (2013) 181-192.
 
 
Hypercube-Anti-Ramsey Numbers of Q5(joint work
          with Jens-P. Bode and Dorothée Grimm).
 Ars
          Combinatoria 110 (2013) 105-111.
 
 
[1,1,t]-Colorings of Complete Graphs(joint
          work with Massimiliano Marangio and Zsolt Tuza).
 Graphs
          and Combinatorics 29 (2013) 1041-1050.
 
 
Saturated Rainbow Edge Colorings of Cube Graphs(joint work with Heiko Harborth).
 Congressus Numerantium
          212 (2012) 5-13.
 
 
Coloring of n-Dimensional Distance Graphs(joint work with Massimiliano Marangio).
 Congressus
          Numerantium 212 (2012) 97-105.
 
 
Closures, Cycles, and Paths(joint work with
          Jochen Harant, Akira Saito, and Ingo Schiermeyer).
 Journal
          of Graph Theory 69 (2012) 314-323.
 
 
Grundy Numbers of Strong Products of Graphs(joint work with Jens-P. Bode and Christoph Hillert).
 Congressus Numerantium 214 (2012) 179-186.
 
 
Improved Degree Conditions for Hamiltonian
          Properties(joint work with Ingo Schiermeyer).
 Discrete Mathematics 312 (2012) 2140-2145.
 
 
Rainbow Cycles in Cube Graphs(joint work with
          Jens-P. Bode and Sebastian Struckmann).
 Journal Comb.
          Math. Comb. Computing 80 (2012) 199-205.
 
 
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