@article{BASM_2006_3_a6,
     author = {Angela P\u{a}\c{s}canu},
     title = {The $GL(2,{\mathbb R})$-orbits of polynomial differential systems of degree four},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {65--72},
     publisher = {mathdoc},
     number = {3},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2006_3_a6/}
}