@article{SPS_1979__13__332_0,
     author = {Jeulin, Thierry and Yor, Marc},
     title = {In\'egalit\'e de {Hardy,} semimartingales, et faux-amis},
     journal = {S\'eminaire de probabilit\'es de Strasbourg},
     pages = {332--359},
     publisher = {Springer - Lecture Notes in Mathematics},
     volume = {13},
     year = {1979},
     mrnumber = {544805},
     zbl = {0419.60049},
     language = {fr},
     url = {http://www.numdam.org/item/SPS_1979__13__332_0/}
}