Rousseau, C. Hilbert's 16-th problem for quadratic vector fields and cyclicity of graphics.
Chicago-стиль цитированияRousseau, Christiane. Hilbert's 16-th Problem for Quadratic Vector Fields and Cyclicity of Graphics.
MLA-цитированиеRousseau, Christiane. Hilbert's 16-th Problem for Quadratic Vector Fields and Cyclicity of Graphics.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.