@article{BUMI_2008_9_1_2_a10,
     author = {Bardi, Martino and Mannucci, Paola},
     title = {Comparison {Principles} for {Subelliptic} {Equations} of {Monge-Amp\`ere} {Type}},
     journal = {Bollettino della Unione matematica italiana},
     pages = {489--495},
     publisher = {mathdoc},
     volume = {Ser. 9, 1},
     number = {2},
     year = {2008},
     zbl = {1203.35081},
     mrnumber = {2424306},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2008_9_1_2_a10/}
}