@inproceedings{inproceedingsd7983243,
title   = {Critical speeds of geometrically imperfect rotating shafts},
author = {Mazzilli, Carlos Eduardo Nigro},
year = {1989},
publisher = {Amer Acad Mechanics/Assoc Bras Ciencias Mecanicas},
booktitle   = {Pan American Congress of Applied Mechanics}
}