REPEȘCO V. CANONICAL FORMS OF CUBIC DIFFERENTIAL SYSTEMS WITH REAL INVARIANT STRAIGHT LINES OF TOTAL MULTIPLICITY SEVEN ALONG ONE DIRECTION. ActaEX [Internet]. 2018Dec.20 [cited 2024Oct.16];6(2):124-32. Available from: https://revistaust.upsc.md/index.php/acta_exacte/article/view/373