Yang, Qing; Zhang, Peng; An, Ruizhi; Qiao, Nanqian; Da, Zhen; Ba, Sang. Spatial and temporal distribution patterns and driving mechanisms of ciliate communities
Doklady. 1964, 9: 111. Bibcode:1964SPhD....9..111D. Doroshkevich, A. G. Spatial structure of perturbations and origin of galactic rotation in fluctuation
of localities in Poland, Vol. III: P – Ż]. Ministry of Administration, Spatial Economy and Environmental Protection 1st. Warsaw, Poland: Central Statistical