Complexity of networks II: The set complexity of edge-colored graphs. - Tomasz M. Ignac; Nikita A. Sakhanenko; David J. Galas (Complex., 2012)

Relations between the set-complexity and the structure of graphs and their sub-graphs. - Tomasz M. Ignac; Nikita A. Sakhanenko; David J. Galas (EURASIP J. Bioinform. Syst. Biol., 2012)

Describing the complexity of systems: Multi-variable "set complexity" and hypergraphs - David J. Galas; Nikita A. Sakhanenko; Alexander Skupin; Tomasz M. Ignac (CoRR, 2013)

Describing the Complexity of Systems: Multivariable "Set Complexity" and the Information Basis of Systems Biology. - David J. Galas; Nikita A. Sakhanenko; Alexander Skupin; Tomasz M. Ignac (J. Comput. Biol., 2014)