@article{BUMI_2013_9_6_3_a1,
     author = {Pusateri, Fabio},
     title = {Space-Time {Resonances} and the {Null} {Condition} for {Wave} {Equations}},
     journal = {Bollettino della Unione matematica italiana},
     pages = {513--529},
     publisher = {mathdoc},
     volume = {Ser. 9, 6},
     number = {3},
     year = {2013},
     zbl = {1122.35068},
     mrnumber = {3202837},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/BUMI_2013_9_6_3_a1/}
}