Popović, R. 1965-1966 (1968): Prilog proučavanju problema uticaja oblačnosti na intenzitet transpiracije nekih biljaka - Contribution to the study of the effect of cloudness on the intensity of transpiration of some plants.- Glasn. Bot. Zavoda i Bašte Univ. Beograd 3(1-4): 201-212.