(1)
Agafonova, L.; Alsina, I.; Sokolov, G.; Kovrik, S.; Bambalov, N.; Apse, J.; Rak, M. New Kinds of Sapropel and Peat Based Fertilizers. ETR 2015, 2, 20-26. https://doi.org/10.17770/etr2015vol2.271.