COZMA, D., & MATEI, A. (2019). CENTER CONDITIONS FOR A CUBIC DIFFERENTIAL SYSTEM WITH TWO INVARIANT STRAIGHT LINES AND ONE INVARIANT ELLIPTIC CURVE . Acta Et Commentationes Exact and Natural Sciences, 4(2), 60-69. https://doi.org/10.36120/2587-3644.v4i2.60-69