1. Bajguz A., Czerpak R. 1998. Physiological and biochemical role of brassinosteroids and their structure-activity relationship of brassinosteroids in the green alga Chlorella vulgaris. J. Plant Growth Regul., 17: 131–139.
2. Burkhanova E.A., Fedina A.B., Kulaeva O.N. 1999. Effect of salicylic acid and (2′–5′)-oligoadenylates on protein synthesis in tobacco leaves under heat shock conditions: a comparative study. Russ. J. Plant Physiol., 46: 11–16.
3. Burkiewicz K., Kentzer T. 1984. Gibberellins as extracelullar products of algae. Wiss. Z. Univ. Rostock Naturwiss. Reihe, 33: 29–30.
4. Czerpak R., Bajguz A. 1993. Effect of auxins and cytokinins on protein and saccharides extracelullar excretion in Chlorella pyrenoidosa. Pol. Arch. Hydrobiol., 40: 249–254.
5. Czerpak R., Bajguz A. 1998. Physiological and metabolical activity of salicylic acid in plants. Kosmos, 47: 83–93 [in Polish, Summ in English].