Valery G. Romanovski

1. Limit cycle bifurcations from a nilpotent focus or center of planar systems
   2011/09/29 by Maoan Han, Han, Maoan, Valery G. Romanovski +1 · 1 citation
   Mathematics · #Advanced Differential Equations and Dynamical Systems #Classical Analysis and ODEs (math.CA) #FOS: Mathematics #math.CA