Selected Topics from the Theory of Graph Energy: Hypoenergetic Graph Snježana Majstorović, Antoaneta Klobučar, Ivan Gutman (2009) Zbornik Radova
Some results in discrete mathematics and digital geometry by Professor Dragan Acketa. Lozić, Sanja, Mudrinski, Vojislav, Žunić, Vojislav (2003) Novi Sad Journal of Mathematics