Global injectivity of C¹ the real plane, inseparable leaves and the palais-smale condition
Carlos Gutierrez Xavier Jarque; J Llibre; M A Teixeira
São Carlos ICMC-USP 2005
Available at
ICMC - Inst. Ciên. Mat. Computação
(NOTAS SMA G984gi e.1 ) and other locations(GetIt)