REPEȘCO, V. 2018. CANONICAL FORMS OF CUBIC DIFFERENTIAL SYSTEMS WITH REAL INVARIANT STRAIGHT LINES OF TOTAL MULTIPLICITY SEVEN ALONG ONE DIRECTION. Acta et Commentationes Exact and Natural Sciences. 6, 2 (Dec. 2018), 124-132. DOI:https://doi.org/10.36120/2587-3644.v6i2.124-132.