[1]P. Oravec, Z. Galda, и K. Kubenková, PMI, т. 170, вып. 2, сс. 258-261, апр. 2007.

[1]P. Oravec, Z. Galda, and K. Kubenková, “Acoustic requirements for constructions in central Europe”, PMI, vol. 170, no. 2, pp. 258-261, Apr. 2007.