Gutierrez, Carlos; Guadalupe, Irwen; Tribuzy, Renato; Guíñez, Víctor Lines of curvature on surfaces immersed in \(\mathbb{R}^4\). (English) Zbl 0893.53004 Bol. Soc. Bras. Mat., Nova Sér. 28, No. 2, 233-251 (1997). Reviewer: D.Andrica (Cluj-Napoca) MSC: 53A07 58D10 PDFBibTeX XMLCite \textit{C. Gutierrez} et al., Bol. Soc. Bras. Mat., Nova Sér. 28, No. 2, 233--251 (1997; Zbl 0893.53004) Full Text: DOI
Gutierrez, Carlos; Teixeira, Marco-Antonio Asymptotic stability at infinity of planar vector fields. (English) Zbl 0848.58034 Bol. Soc. Bras. Mat., Nova Sér. 26, No. 1, 57-66 (1995). Reviewer: U.Bellack (Berlin) MSC: 37C75 37C10 34D05 34C40 PDFBibTeX XMLCite \textit{C. Gutierrez} and \textit{M.-A. Teixeira}, Bol. Soc. Bras. Mat., Nova Sér. 26, No. 1, 57--66 (1995; Zbl 0848.58034) Full Text: DOI
Gutierrez, Carlos Dissipative vector fields on the plane with infinitely many attracting hyperbolic singularities. (English) Zbl 0776.34024 Bol. Soc. Bras. Mat., Nova Sér. 22, No. 2, 179-190 (1992). Reviewer: J.Hainzl (Kassel) MSC: 34C05 37-XX 34D45 PDFBibTeX XMLCite \textit{C. Gutierrez}, Bol. Soc. Bras. Mat., Nova Sér. 22, No. 2, 179--190 (1992; Zbl 0776.34024) Full Text: DOI