@article{BASM_2003_1_a9,
     author = {Alexandru \c{S}ub\u{a}},
     title = {Solution of the center problem  for cubic systems with a~bundle of three invariant  straight lines},
     journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica},
     pages = {91--101},
     publisher = {mathdoc},
     number = {1},
     year = {2003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BASM_2003_1_a9/}
}