• Freshwater sponges in Estonia : genetic and morphological identificationRoovere, Tiiu; Lopp, Annika; Reintamm, Tõnu; Kuusksalu, Anne; Richelle-Maurer, Evelyn; Kelve, MerikeProceedings of the Estonian Academy of Sciences. Biology. Ecology2006 / 3, p. 216-227 : ill
• Molecular identification, characterization and distribution of freshwater sponges (Porifera: Spongillidae) in EstoniaLopp, Annika; Reintamm, Tõnu; Vallmann, Kerli; Päri, Mailis; Mikli, Valdek; Richelle-Maurer, Evelyn; Kelve, MerikeFundamental and applied limnology = Archiv für Hydrobiologie2007 / 1, p. 93-103 https://www.researchgate.net/publication/233617898_Molecular_identification_characterization_and_distribution_of_freshwater_sponges_Porifera_Spongillidae_in_Estonia