Bulletin mathématique de la Société des Sciences Mathématiques de Roumanie, Nouvelle Série, Vol. 60(108), No. 2 (2017), pp. 195-206 (12 pages) The problem of finding all minimal surfaces presented in ...
The main purpose of this paper is to give the classification and the topological phase portraits of all quadratic systems having minimal polynomial first integrals of degree less than 5, and to prove ...
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