Comparison study of energy bands and Wannier-Mott excitons in mixed Zn(P1-xAsx)2 and Zn1-xCdxP2 crystals O. A. Yeshchenko, M. M. Biliy and Z. Z. Yanchuk Eur. Phys. J. B, 28 1 (2002) 37-43 Published online: 09 July 2002 DOI: 10.1140/epjb/e2002-00196-7