| 1. | USALOVA Ludmila: Rock Drilling Noise Octave Analysis. Acta Avionica. Roc. VI., c. 9 (2004), s. 122-124. | | 2. | USALOVA Ludmila: Analyza akustickych a vibracnych merani v procese rozpojovania. Acta Montanistica Slovaca, Vol. 9, No. 4 (2004), p. 379-382. | | 3. | USALOVA Ludmila: Elimination of Unwanted Elements in Study Noise of Rock Drilling Process. In: ICCC 2004, Zakopane, Poland, 2004. ISBN 83-89772-00-0, p. 209-212. | | 4. | USALOVA Ludmila: Noise as Information Source In Rock Disintegration Process. In: Process Control 2004, Pardubice, 2004. ISBN 80-7194-662-1, p. 143. |
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