Ermilov, S. G., Alvarado Rodríguez, O., & Retana Salazar, A. P. (2014). Two new species of Pergalumna (Acari, Oribatida, Galumnidae) from Costa Rica, including a key to all species of the genus from the Neotropical region.

Ermilov, Sergey G., Olman Alvarado Rodríguez, و Axel P. Retana Salazar. Two New Species of Pergalumna (Acari, Oribatida, Galumnidae) From Costa Rica, Including a Key to All Species of the Genus From the Neotropical Region. 2014.

Ermilov, Sergey G., Olman Alvarado Rodríguez, و Axel P. Retana Salazar. Two New Species of Pergalumna (Acari, Oribatida, Galumnidae) From Costa Rica, Including a Key to All Species of the Genus From the Neotropical Region. 2014.