@article{Medved'_2001 author = {V. A. Medved' and Ye. V. Borisova and Z. N. Gorbunova}, title = {Transformation of urea during the growth of some blue-green (Cyanoprocaryota) and green (Chlorophyta, Chlorococcales) algae}, journal = {International Journal on Algae}, issn = {1521-9429}, year = {2001}, volume = {3}, number = {4}, pages = {89--100} }