1Katica (Stevanovic) HEDRIH,Aleksandar FILIPOVSKI(Faculty of Mechanical Engineering, University of Nis, Mathematical Institute SANU,Belgrade).E-mail:katica@masfak.masfak.masfak.ni.ac.yu,katicav@kalca.junis.ni.ac.yu.Longitudinal Vibrations of Rheological Rodwith Variable Cross Section[J].Communications in Nonlinear Science and Numerical Simulation,1999,4(3):192-199.