Broul , J. и Husárik , J. (2007) Special conditions of transporting routes construction in undermined areas in Czech Republic, Записки Горного института, 170(2), сс. 97-99. доступно на: https://pmi.spmi.ru/pmi/article/view/7723 (просмотрено: 23 апрель 2025).

Broul , J. and Husárik , J. (2007) “Special conditions of transportation routes construction in undermined areas in Czech Republic”, Journal of Mining Institute, 170(2), pp. 97-99. Available at: https://pmi.spmi.ru/pmi/article/view/7723 (Accessed: 23 April 2025).