article Eckhard Steffen author 155480000-0002-9808-7401 Alexander Vogel author 2021 eng 1909.09381 91 Steffen, Eckhard, and Alexander Vogel. “Concepts of Signed Graph Coloring.” <i>European J. Combinatorics</i>, vol. 91, 2021. Steffen E, Vogel A. Concepts of signed graph coloring. <i>European J Combinatorics</i>. 2021;91. @article{Steffen_Vogel_2021, title={Concepts of signed graph coloring}, volume={91}, journal={European J. Combinatorics}, author={Steffen, Eckhard and Vogel, Alexander}, year={2021} } Steffen, E., &#38; Vogel, A. (2021). Concepts of signed graph coloring. <i>European J. Combinatorics</i>, <i>91</i>. E. Steffen and A. Vogel, “Concepts of signed graph coloring,” <i>European J. Combinatorics</i>, vol. 91, 2021. E. Steffen, A. Vogel, European J. Combinatorics 91 (2021). Steffen, Eckhard, and Alexander Vogel. “Concepts of Signed Graph Coloring.” <i>European J. Combinatorics</i> 91 (2021). 134452019-09-24T14:19:42Z2023-05-16T10:46:55Z