Kastori, R., Petrović, N., Arsenijević Maksimović, I. 1995 (1997): Effect of lead on the activity of some enzymes of nitrogen metabolism in sugar beet, Beta vulgatis L. (Uticaj olova na aktivnost enzima metabolizma azota u šećernoj repi, Beta vulgaris L.). - Glasn. Inst. Bot. Bašte Univ. Beograd, 29: 77-84.