@article{AIHPB_1996__32_5_589_0,
     author = {Hirsch, Francis and Song, Shiqi},
     title = {Inequalities for {Bochner's} subordinates of two-parameter symmetric {Markov} processes},
     journal = {Annales de l'I.H.P. Probabilit\'es et statistiques},
     pages = {589--600},
     publisher = {Gauthier-Villars},
     volume = {32},
     number = {5},
     year = {1996},
     mrnumber = {1411273},
     zbl = {0886.31006},
     language = {en},
     url = {http://archive.numdam.org/item/AIHPB_1996__32_5_589_0/}
}