1. T. Kassabova and E. Russanov,Agressologie 16C, 1 (1975).
2. T. Kassabova, P. Balevska, and E. Russanov,Compt. Rend. Acad. Bulg. Sci. 29, 117 (1976).
3. P. Balevska, E. Ivancheva, and E. Russanov,Agressologie 16C, 7 (1975).
4. C. H. Gallagher and V. E. Reeve,Aus. J. Exp. Biol. Med. Sci. 49, 453 (1971).
5. P. Balevska and E. Russanov, inBioenergetics and Mitochondria, E. Russanov and P. Balevska, eds., Sofia, Publishing House of the Bulgarian Academy of Sciences, 1976, pp. 129.