Long cycles in graphs and digraphs. - Lech Adamus (Electron. Notes Discret. Math., 2006)

Almost Symmetric Cycles in Large Digraphs. - Lech Adamus; A. Pawel Wojda (Graphs Comb., 2006)

Edge condition for long cycles in bipartite graphs. - Lech Adamus (Discret. Math. Theor. Comput. Sci., 2009)

Ore and Erdős type conditions for long cycles in balanced bipartite graphs. - Janusz Adamus; Lech Adamus (Discret. Math. Theor. Comput. Sci., 2009)

A note on t-complementing permutations for graphs. - Lech Adamus; Beata Orchel; Artur Szymanski; A. Pawel Wojda; Malgorzata Zwonek (Inf. Process. Lett., 2009)

A degree condition for cycles of maximum length in bipartite digraphs. - Janusz Adamus; Lech Adamus (Discret. Math., 2012)

On the Meyniel condition for hamiltonicity in bipartite digraphs. - Janusz Adamus; Lech Adamus; Anders Yeo (Discret. Math. Theor. Comput. Sci., 2014)