1. Seasonal variations in the immune system of lower vertebrates;Zapata;Review. Immunol. Today,1992
2. Hormonal and nervous regulation of amphibian and reptilian immunity;Saad;Folia Biol. (Kraków),1994
3. Amphibianlymphoidorgans: a review;Pz.xl;lytycz;Folia Biol. (Krakow),1983
4. Seasonal cyclic changes in the thymus gland of the adult frog, Rana temporaria;Pz.xl;lytycz;Thymus,1983
5. Annual cycle of mitotic activity in the thymus of the frog. Rana temporaria;Pz.xl;lytycz;Herpetopathologia,1991