@article{ASENS_1973_4_6_1_103_0,
     author = {Kleppner, Adam and Lipsman, Ronald},
     title = {The plancherel formula for group extensions {II}},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {103--132},
     publisher = {Elsevier},
     volume = {Ser. 4, 6},
     number = {1},
     year = {1973},
     doi = {10.24033/asens.1246},
     zbl = {0258.43001},
     language = {en},
     url = {http://archive.numdam.org/articles/10.24033/asens.1246/}
}