SHAFRANSKAYA, Eleonora F.; DOLZHIKOVA, Angela V. Karl Schmückle is unknown companion on the Tuvan journey of Otto Menchen-Helfen. The New Research of Tuva, [S. l.], n. 1, p. 135–147, 2024. DOI: 10.25178/nit.2024.1.9. Disponível em: https://nit.tuva.asia/nit/article/view/1306. Acesso em: 3 mar. 2026.