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- [4] PHASE PORTRAITS OF THE QUADRATIC SYSTEMS WITH A POLYNOMIAL INVERSE INTEGRATING FACTOR INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS, 2009, 19 (03): : 765 - 783
- [5] GLOBAL PHASE PORTRAITS OF QUADRATIC POLYNOMIAL DIFFERENTIAL SYSTEMS WITH A SEMI-ELEMENTAL TRIPLE NODE INTERNATIONAL JOURNAL OF BIFURCATION AND CHAOS, 2013, 23 (08):
- [8] Phase portraits of Abel quadratic differential systems of the second kind DYNAMICAL SYSTEMS-AN INTERNATIONAL JOURNAL, 2018, 33 (04): : 581 - 601
- [9] Phase portraits of quadratic systems DIFFERENTIAL EQUATIONS: THEORY, NUMERICS AND APPLICATIONS, 1997, : 169 - 185