@article{10_1017_S0017089510000546,
     author = {GREEN, BEN and TAO, TERENCE and ZIEGLER, TAMAR},
     title = {AN {INVERSE} {THEOREM} {FOR} {THE} {GOWERS} {U4-NORM}},
     journal = {Glasgow mathematical journal},
     pages = {1--50},
     year = {2011},
     volume = {53},
     number = {1},
     doi = {10.1017/S0017089510000546},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089510000546/}
}