'3in1' Enchanced: three squared ways to '3in1' GRAPHS / Zdzisław SKUPIEŃ // Discussiones Mathematicae. Graph Theory ; ISSN 1234-3099. — 2007 vol. 27 no. 3, s. 561–563. — Bibliogr. s. 563. — Proceedings of the 14th Workshop '3in1' GRAPHS 2005 : Dobczyce, November 10-12, 2005 / International Visegrad Fund. — Zielona Góra : Technical University Press, 2007. — tekst: http://goo.gl/LvdprW

A Sokoban-type game and arc deletion within irregular digraphs of all sizes / Zyta Dziechcińska-Halamoda, Zofia Majcher, Jerzy Michael, Zdzisław SKUPIEŃ // Discussiones Mathematicae. Graph Theory ; ISSN 1234-3099. — 2007 vol. 27 iss. 3, s. 611–622. — Bibliogr. s. 622, Abstr.. — 14th Workshop '3in1' GRAPHS 2005 : Dobczyce, November 10-12, 2005. — tekst: https://goo.gl/qkH4RM

Constructions of universal parts of some complete graphs / Anna KĘDZIOR, Zdzisław SKUPIEŃ // W: Graphs 2007 : Czech-Slovak graph theory conference : June 11–15, 2007, Hradec nad Moravicí : abstracts / ed. Petr Kovář ; Vysoká škola báňská – Technická univerzita Ostrava. Katedra aplikované matematiky. — Ostrava : TU, 2007. — ISBN: 978-80-248-1445-2. — S. 39

Exponentially many hypohamiltonian snarks / Zdzisław SKUPIEŃ // Electronic Notes in Discrete Mathematics ; ISSN 1571-0653. — 2007 vol. 28, s. 417–424. — Bibliogr. s. 423–424, Abstr.. — Publikacja dostępna online od: 2007-03-02. — 6th Czech-Slovak international symposium on Combinatorics, graph theory, algorithms and applications : Prague, Czech Republic, 10–16 July 2006. — tekst: https://goo.gl/wP78Wx