| The solution of the problem of center for cubic differential systems with four invariant straight lines D Cozma, A Suba Scientific Annals of the” Al. I. Cuza” University, Mathematics 44, 517-530, 1998 | 66 | 1998 |
| Integrability of cubic systems with invariant straight lines and invariant conics D Cozma Știința, Chișinău, 2013 | 61 | 2013 |
| Solution of the problem of the centre for cubic differential system with three invariant straight lines in generic position A Šubą, D Cozma Qualitative Theory of Dynamical Systems 6 (1), 45-58, 2005 | 61 | 2005 |
| Partial integrals and the first focal value in the problem of centre D Cozma, A Şubă Nonlinear Differential Equations and Applications NoDEA 2 (1), 21-34, 1995 | 38 | 1995 |
| The problem of the centre for cubic systems with two parallel invariant straight lines and one invariant conic D Cozma Nonlinear Differential Equations and Applications NoDEA 16, 213-234, 2009 | 36 | 2009 |
| Solution of the problem of the centre for, a cubic differential system with three invariant straight lines D Cozma, A § ubâ Qualitative theory of dynamical systems 2, 129-143, 2001 | 34 | 2001 |
| Darboux integrability and rational reversibility in cubic systems with two invariant S Lines, D Cozma Electronic Journal of Differential Equations, 1-19, 2013 | 27 | 2013 |
| Solution of the problem of the center for cubic systems with two homogeneous and one non–homogeneous invariant straight lines A Suba, D Cozma Bull. Acad. Sci. of Moldova, Mathematics 29 (1), 37-44, 1999 | 20 | 1999 |
| Center problem for cubic systems with a bundle of two invariant straight lines and one invariant conic D Cozma Buletinul Academiei de Ştiinţe a Moldovei. Matematica 68 (1), 32-49, 2012 | 18 | 2012 |
| Solution of the problem of the centre for cubic differential system with three invariant straight lines two of which are parallel A Suba, D Cozma Bull. Acad. Sci. of Moldova, Mathematics 2, 75-86, 2001 | 18 | 2001 |
| Darboux integrability in the cubic differential systems with three invariant straight lines D Cozma Romai Journal 5 (1), 45-61, 2009 | 17 | 2009 |
| The problem of the centre for cubic differential systems with two homogeneous invariant straight lines and one invariant conic D Cozma Annals of Differential Equations 26 (4), 385-399, 2010 | 16 | 2010 |
| Integrability conditions for a class of cubic differential systems with a bundle of two invariant straight lines and one invariant cubic D Cozma, A Dascalescu Buletinul Academiei de Ştiinţe a Moldovei. Matematica 86 (1), 120-138, 2018 | 13 | 2018 |
| Conditions for the existence of four invariant straight lines in a cubic differential systems with a singular point of a center or a focus type D Cozma, A Suba Bul. Acad. de St. a Republicii Moldova. Matematica 3, 54-62, 1993 | 10 | 1993 |
| Darboux integrability of a cubic differential system with two parallel invariant straight lines D Cozma Carpathian Journal of Mathematics 38 (1), 129-137, 2022 | 8 | 2022 |
| Center conditions for a cubic system with a bundle of two invariant straight lines and one invariant cubic D Cozma, A Dascalescu ROMAI Journal 13 (2), 39-54, 2017 | 8 | 2017 |
| Invariant methods for studying stability of unperturbed motion in ternary differential systems with polynomial nonlinearities N Neagu, D Cozma, M Popa Буковинський математичний журнал, 133-139, 2016 | 8 | 2016 |
| Conditions of centre for some cubic systems with three linear particular integrals D Cozma, A Suba Scripta Scientiarum Mathematicarum. Tomus 1, 82-94, 1997 | 6 | 1997 |
| Center conditions for a cubic differential system having an integrating factor DV Cozma, AI Matei Буковинський математичний журнал 8 (2), 2020 | 5 | 2020 |
| Center problem for a class of cubic systems with a bundle of two invariant straight lines and one invariant conic D Cozma Buletinul Academiei de Ştiinţe a Moldovei. Matematica 64 (3), 51-66, 2010 | 5 | 2010 |
