Soeprobowati, Tri Retnaningsih, S. Djalal Tandjung, Sutikno Sutikno, Suwarno Hadisusanto, and Peter Gell. 2017. “THE MINIMUM NUMBER OF VALVES FOR DIATOMS IDENTIFICATION IN RAWAPENING LAKE, CENTRAL JAVA”. BIOTROPIA - The Southeast Asian Journal of Tropical Biology 23 (2):97-100. https://doi.org/10.11598/btb.2016.23.2.486.