Changes in chlorophyll fluorescence quenching and pigment composition in the green alga Chlorococcum sp. grown under nitrogen deficiency and salinity stress. - Masojídek,J..; Torzillo,G..; Koblízek,M..; Kopecky,J..; Nidiaci,L..; Komenda,J.. (J. Appl. Phycol., 2000)