Citation: Si. Pogosyan et al., PHYSIOLOGICAL HETEROGENEITY OF A POPULATI ON OF MICROALGAE - CLASSIFICATION OF COENOBIA SCENEDESMUS-QUADRICAUDA ACCORDING TO THE TYPES OF CURVES OF THE INDUCTION OF CHLOROPHYLL FLUORESCENCE, Izvestia Akademii nauk SSSR. Seria biologiceskaa, (3), 1996, pp. 337-343