@article{JLT_2017_27_1_JLT_2017_27_1_a8,
     author = {M. G. Cowling and A. Ottazzi},
     title = {Structure of {Stratified} {Groups.} {I:} {Product} {Decompositions}},
     journal = {Journal of Lie theory},
     pages = {177--183},
     year = {2017},
     volume = {27},
     number = {1},
     url = {http://geodesic.mathdoc.fr/item/JLT_2017_27_1_JLT_2017_27_1_a8/}
}