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Kaplan, Z.; Štěpánek, J. (2003-06-01). "Genetic variation within and between populations of Potamogeton pusillus agg". Plant Systematics and Evolution (dalam bahasa Inggris). 239 (1–2): 95–112. doi:10.1007/s00606-002-0252-7. ISSN0378-2697.