Gudlugur Thorbergsson, Masaaki Umehara, “Inflection points and double tangents on anti-convex curves in the real projective plane”, Tohoku Math. J. (2), 60:2 (2008)
Serge Tabachnikov, “Tire track geometry: Variations on a theme”, Isr J Math, 151:1 (2006), 1
R. Uribe-Vargas, “On the theory of fronts on the 2-sphere and the theory of space curves”, Journal of Mathematical Sciences (New York), 126:4 (2005), 1344
Galaktionov V.A., Harwin P.J., “Sturm's theorems on zero sets in nonlinear parabolic equations”, Sturm-Liouville Theory: Past and Present, 2005, 173–199
R. Uribe-Vargas, “On the theory of fronts on the 2-sphere and the theory of space curves”, J Math Sci, 126:4 (2005), 1344
R. Uribe-Vargas, “On the theory of fronts on the 2-sphere and the theory of space curves”, J Math Sci, 126:4 (2005), 1344
Arnold's Problems, 2005, 181
А. В. Боровских, “Групповая классификация уравнений эйконала для трехмерной неоднородной среды”, Матем. сб., 195:4 (2004), 23–64 ; A. V. Borovskikh, “Group classification of the eikonal equation for a 3-dimensional inhomogeneous medium”, Sb. Math., 195:4 (2004), 479–520
Ricardo Uribe-Vargas, “Four-Vertex Theorems, Sturm Theory and Lagrangian Singularities”, Mathematical Physics, Analysis and Geometry, 7:3 (2004), 223
Borovskikh, AV, “The eiconal equation in an inhomogeneous medium”, Doklady Mathematics, 68:1 (2003), 103