Kargl , H. (2009) "Cutting Technology With Point Attack Picks on Roadheaders and Its Challenges", Записки Горного института, 181, с. 104. доступно на: https://pmi.spmi.ru/pmi/article/view/7040 (просмотрено: 18 апрель 2026).

Kargl , H. (2009) "Cutting Technology With Point Attack Picks on Roadheaders and Its Challenges", Journal of Mining Institute, 181, p. 104. Available at: https://pmi.spmi.ru/pmi/article/view/7040 (Accessed: 18 April 2026).