P. Fernández Sánchez, J. Mozo Fernández y H. Neciosup: On codimension one foliations with prescribed cuspidal separatrix. Journal of Differential Equations Volume 256, Issue 4, 15 February 2014, Pages 1702–1717.
P. Fernández Sánchez, J. Mozo Fernández y H. Neciosup: On codimension one foliations with prescribed cuspidal separatrix. Journal of Differential Equations Volume 256, Issue 4, 15 February 2014, Pages 1702–1717.