“Phytoplankton of the reservoir ‘Dospat’ (Rodopi Mts, Bulgaria) as indicator of negative trend in reservoir development due to long-term cage fish farming”, Год. СУ, БФ, Книга 2 - Ботаника, vol. 99, pp. 47–60, Jul. 2025, doi: 10.60066/GSU.BIOFAC.Bot.99.47-60.