@article{MTA_2017_2_1_a5,
     author = {Petru Jebelean and Jean Mawhin and C ̆alin S ̧erban},
     title = {Multiplicity results for some quasilinear differential systems with periodic nonlinearities},
     journal = {Minimax theory and its applications},
     year = {2017},
     volume = {2},
     number = {1},
     zbl = {1364.34028},
     url = {http://geodesic.mathdoc.fr/item/MTA_2017_2_1_a5/}
}