Warning message Node revision 628 not found in node Upper and low bounds of azimuthal numbers related to elementary wave functions of an elliptic cylinder . Perharps it was deleted. Akhundova Parvana E. RussiaБаку Institute of Mathematics and Mechanics, Azerbaijan National Academy of Sciences, Azerbaijan, AZ1141, Baku, F. Agaev, 9 sopromat_v@mail.ru Author's articles Slot of Variable Width in a Hub of Friction Pair