@article{BASM_2009_2_a7,
     author = {V. Pu\c{t}untic\u{a} and A. \c{S}ub\u{a}},
     title = {The cubic differential system with six real invariant straight lines along three directions},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {111--130},
     publisher = {mathdoc},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2009_2_a7/}
}