De Freitas Coutinho, Marco Antonio. “Operation Anadyr: The bear’s Footprints in America”. Coleção Meira Mattos: revista das ciências militares 18, no. 61 (February 16, 2024): 77-102. Accessed July 22, 2024. http://ebrevistas.eb.mil.br/RMM/article/view/11671.