Nutrient budget of Lake Peipsi in 1998Nõges, Peeter; Leisk, Ülle; Loigu, Enn; Reihan, Alvina; Skakalski, Boris; Nõges, TiinaProceedings of the Estonian Academy of Sciences. Biology. Ecology2003 / 4, p. 407-422 : ill https://artiklid.elnet.ee/record=b1014443*est