PIKHURKO, O. (2007, Januar 1). Trees are almost prime. 307(11-12). Amsterdam: Elsevier, 2007. Abgerufen von http://pascal-francis.inist.fr/vibad ndex.php?action=search&terms=18660657
ISO-690 (author-date, English)PIKHURKO, Oleg, 2007. Trees are almost prime. In: [online]. Amsterdam: Elsevier, 2007. 1 Januar 2007. Available from: http://pascal-francis.inist.fr/vibad ndex.php?action=search&terms=18660657
Modern Language Association 9th editionPIKHURKO, O. Trees are almost prime. Nr. 11-12, Amsterdam: Elsevier, 2007., 2007, http://pascal-francis.inist.fr/vibad ndex.php?action=search&terms=18660657.
Mohr Siebeck - Recht (Deutsch - Österreich)Emerald - Harvard
PIKHURKO, O. (2007), „Trees are almost prime“, in , Bd. 307, Amsterdam: Elsevier, 2007., verfügbar unter: http://pascal-francis.inist.fr/vibad ndex.php?action=search&terms=18660657.