On chaos of a cubic $p$-adic dynamical system
  In the paper we describe basin of attraction of the $p$-adic dynamical system $f(x)=x^3+ax^2$. Moreover, we also describe the Siegel discs of the system, since the structure of the orbits of the system is related to the geometry of the $p$-adic Siegel discs. 
Farrukh Mukhamedov, Jos\'e F.F. Mendes