Okolodkov, Yuri B. 2017. «Further Observations on a Hypothecal Pore in the Genus Protoperidinium Bergh (Dinoflagellata)». HIDROBIOLÓGICA 13 (4):263-69. https://hidrobiologica.izt.uam.mx/hidrobiologica/index.php/revHidro/article/view/1132.