Funded by the National Science Foundation PEET program (Partnerships for Enhancing Expertise in Taxonomy)
Stark, V. N. 1926d. Sootnoshenie v razvitii Crypturguscinereus Herbst i Blastophagus minor Hart. v usloviyakh Bryanskogo lesnogo masiva [Die Beziehungen von Crypturgus cinereus Herbst zu Blastophagus minor Hart.]. Zashchita Rastenii 3:164-167.