"Status and Affinities of the Bears of Northeastern Asia", by Ernst Schwarz Journal of Mammalogy 1940 American Society of Mammalogists.
Ogonev, S.I. 1932, "The mammals of eastern Europe and northern Asia", vol. 2, pp. 11–118. Moscow.
Pocock R.I, "The Black and Brown Bears of Europe and Asia" Part 1. Journal of the Bombay Natural History Society., vol. 35, no. 4, pp. 772–823, figs 1-11. July 15, 1932.
Ursus arctos, by Maria Pasitschniak, Published 23 April 1993 by "The American Society of Mammalogists"
John A. Jackson, "More than Mountains", Chapter 10 (pp 92) & 11, "Prelude to the Snowman Expedition & The Snowman Expedition", George Harrap & Co, 1954
Charles Stonor, "The Sherpa and the Snowman", recounts the 1955 Daily Mail "Abominable Snowman Expedition" by the scientific officer of the expedition, this is a very detailed analysis of not just the "Snowman" but the flora and fauna of the Himalaya and its people. Hollis and Carter, 1955.
John A. Jackson, "Adventure Travels in the Himalaya" Chapter 17, "Everest and the Elusive Snowman", 1954 updated material, Indus Publishing Company, 2005.