[1]J. Broul и J. Husárik, Special conditions of transporting routes construction in undermined areas in Czech Republic, PMI, т. 170, вып. 2, сс. 97-99, апр. 2007.

[1]J. Broul and J. Husárik, “Special conditions of transportation routes construction in undermined areas in Czech Republic”, PMI, vol. 170, no. 2, pp. 97-99, Apr. 2007.