88

Geometric Criterium in the Center Problem

Year:
2016
Language:
english
File:
PDF, 751 KB
english, 2016
90

Nilpotent centres via inverse integrating factors

Year:
2016
Language:
english
File:
PDF, 290 KB
english, 2016
94

Nondegenerate centers and limit cycles of cubic Kolmogorov systems

Year:
2017
Language:
english
File:
PDF, 538 KB
english, 2017