@article{Trifonova_2003 author = {I. S. Trifonova}, title = {Centric diatoms (Centrophyceae, Bacillariophyta) in plankton of Lake Ladoga and it tributaries}, journal = {International Journal on Algae}, issn = {1521-9429}, year = {2003}, volume = {5}, number = {4}, pages = {56--67} }