@article{Vovk_2001 author = {I. V. Vovk and S. L. Dakhnov and V. V. Krizhanovskiy and Valery Oliynik}, title = {Changes of Acoustical Characteristics of Breath Sounds of Pneumonic Patients while Recovering}, journal = {International Journal of Fluid Mechanics Research}, issn = {2152-5102}, year = {2001}, volume = {28}, number = {6}, }