The effect of illumination regimen on temperature-incuced and spotaneous bleaching in euglena gracilis= Der effekt des belichtungsregimes auf das temperatur -induzietre und spontane ausbleichen von euglena gracilis= Utjecaj rezima svjetlosti na spontano i temperaturom inducirano izblijedivanje vrste euglena gracilis - Marcenko, Elena ([s.n.], 1970)