(NmEHANIKA DWIVENIQ VIDKOSTEJ W TRUBAH (B/s - (NpUSTOWOJT(B, (NbORIS wASILXEWI^s ((Nl(B. :s (NnEDRA(B. (NlENINGR(B. (NOTD(B-(NNIE(B,s, 1980)
Keywords: (NfIZIKAs