1. Boev SN: Protostrongylids. Fundamentals of Nematology, Vol. 25. Edited by: Ryzhikov KM. 1975, Helminthological Laboratory, Academy of Sciences of the USSR, Moscow, [English translation by the U.S. Department of Agriculture, Washington, D.C., and Amerind Publishing Co., New Delhi, 1984]
2. Carreno RA, Hoberg EP: Evolutionary relationships among the Protostrongylidae (Nematoda: Metastrongyloidea) as inferred from morphological characters, with consideration of parasite-host coevolution. J Parasitol. 1999, 85: 638-648. 10.2307/3285736.
3. Stroh G, Schmid G:Protostrongylus capreoli nov. sp. der haufigste lungewurm des reher. Berl Tierarztl Wochenschr. 1938, 9: 121-123.
4. Bhatia BB, Pande BP: Studies on lungworms (Metastrongylidae Leiper, 1908) parasitising Indian livestock II. Observations of natural infestations with species of Dictyocaulus Railliet and Henry, 1907 and Varestrongylus Bhalerao, 1932 in the sheep of hills of Uttar Pradesh. Proc Nat Acad Sci India B. 1960, 30: 217-233.
5. Petrosyan SL: Pathomorphological changes in the lungs of elks caused by Varestrongylus alces. Helminthol. 1963, 4: 390-396.