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- [2] COMPLETE NONORIENTABLE MINIMAL-SURFACES IN R3 WITH FINITE TOTAL CURVATURE ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS, 1987, 59 (03): : 141 - 143
- [9] Lines of principal curvature on canal surfaces in R3 ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS, 2006, 78 (03): : 405 - 415