@article{article3e8e0ecf,
title   = {Diffeomorphisms of 'R POT. n' with oscillatory jacobians},
author = {Oliva, Waldyr Muniz and Kuhl, Nelson Mugayar and Magalhães, Luis T},
year = {1993},
doi = {10.5565/PUBLMAT_37293_02},
journal   = {Publicacions Matematiques}
}