1. On the effect of helminthoses on the content of microelements (copper, molybdenum, manganese, iron, zinc) in tissues and organs of sheep;Balayan;Zool. Pap., XVIII,1982
2. Some aspects of helminthose pathogenesis of contemporary representative;Davtjan;Zoology Book, XVIII,1977
3. On microelements like factors changing host-parasite relationships during helminthiases and on the possibility for their application for raising of animal production;Davtjan;Biol. J. Arm., XXX,1982
4. The solid hydroxy salts of bivalent metals;Feitknecht;Fortschr. Chem. Forsch.,1953
5. Veränderungen im Stattus der Spurenelemente von Küken bei Experimenteller Infection mit Ascaridia galli;Gabrashanska;Mh. Vet. Med.,1986