The Digital Twin of Humans
I. Gräßler, G.W. Maier, E. Steffen, D. Roesmann, eds., The Digital Twin of Humans, Springer International Publishing, Cham, 2023.

Symmetric Set Coloring of Signed Graphs
C. Cappello, E. Steffen, Annals of Combinatorics (2022).

Even Factors in Edge-Chromatic-Critical Graphs with a Small Number of Divalent Vertices
E. Steffen, I.H. Wolf, Graphs and Combinatorics 38 (2022).

Frustration-critical signed graphs
C. Cappello, E. Steffen, Discrete Applied Mathematics 322 (2022) 183–193.

Edge colorings and circular flows on regular graphs
D. Mattiolo, E. Steffen, Journal of Graph Theory 99 (2022) 399–413.

Skill-based worker assignment in a manual assembly line
I. Gräßler, D. Roesmann, C. Cappello, E. Steffen, in: E. Lutters (Ed.), Procedia CIRP Design, Elsevier, 2021, pp. 433–438.

Highly edgeconnected regular graphs without large factorizable subgraphs
D. Mattiolo, E. Steffen, Journal of Graph Theory 99 (2021) 107–116.

Fractional Matchings, Component-Factors and Edge-Chromatic Critical Graphs
A. Klopp, E. Steffen, Graphs and Combinatorics (2021) 559–580.

Concepts of signed graph coloring
E. Steffen, A. Vogel, European J. Combinatorics 91 (2021).

Flows on signed graphs without long barbells
Y. Lu, R. Luo, M. Schubert, E. Steffen, C.-Q. Zhang, SIAM J. Discrete Math 34 (4) (2020) 2166–2187.

Unions of 1-factors in r-graphs and overfull graphs
L. Jin, E. Steffen, J. of Combinatorics 11 (2020) 457–473.

Gerechtigkeit in flexiblen Arbeits- und Managementprozessen
G. Engels, G.W. Maier, S.K. Ötting, E. Steffen, A. Teetz, in: S. Wischmann, E.A. Hartmann (Eds.), Zukunft Der Arbeit – Eine Praxisnahe Betrachtung, Springer Verlag, Berlin, Heidelberg, 2018, pp. 221–231.

Measures of Edge-Uncolorability of Cubic Graphs
M.A. Fiol, G. Mazzuoccolo, E. Steffen, The Electronic Journal of Combinatorics 25 (2018).

Flows in Signed Graphs with Two Negative Edges 
E. Rollová, M. Schubert, E. Steffen, The Electronic Journal of Combinatorics 25 (2018).

Cores, joins  and the Fano-flow conjectures
L. Jin, G. Mazzuoccolo, E. Steffen, Discussiones Mathematicae Graph Theory 38 (2018) 165–175.

Approximating Vizing’s independence number conjecture
E. Steffen, Australasian Journal of Combinatorics 71 (2018) 153–160.

Handbuch Gestaltung digitaler und vernetzter Arbeitswelten
G.W. Maier, G. Engels, E. Steffen, eds., Handbuch Gestaltung digitaler und vernetzter Arbeitswelten, 1st ed., Springer Berlin Heidelberg, 2017.

Digitale Zukunft: ein inter- und transdisziplinäres Thema
D. Simon, E. Steffen, in: G.W. Maier, G. Engels, E. Steffen (Eds.), Handbuch Gestaltung digitaler und vernetzter Arbeitswelten, 1st ed., Springer Berlin Heidelberg, 2017, pp. 1–12.

Nowhere-zero 5-flows on cubic graphs with oddness 4
G. Mazzuoccolo, E. Steffen, J. Graph Theory 85 (2017) 363 – 371.

Factors of edge-chromatic critical graphs: a brief survey and some equivalences
S. Bej, E. Steffen, Lecture Notes of Seminario Interdisciplinare Di Matematica 14 (2017) 37–48.