Non-stationary flow of viscoelastic fluid in a cylindrical pipe Kuralboy Navruzov, Suxrob Rajabov, Nabijon Abdikarimov, Otabek Turdimurodov and Rayhona Nasrulloeva E3S Web Conf., 587 (2024) 01013 Published online: 07 November 2024 DOI: 10.1051/e3sconf/202458701013