A generalization of the problem of transmission
Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Serie 3, Volume 14 (1960) no. 3, p. 207-236 
@article{ASNSP_1960_3_14_3_207_0,
     author = {Schechter, Martin},
     title = {A generalization of the problem of transmission},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     publisher = {Scuola normale superiore},
     volume = {Ser. 3, 14},
     number = {3},
     year = {1960},
     pages = {207-236},
     zbl = {0094.29603},
     mrnumber = {131063},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1960_3_14_3_207_0}
}

Schechter, Martin. A generalization of the problem of transmission. Annali della Scuola Normale Superiore di Pisa - Classe di Scienze, Serie 3, Volume 14 (1960) no. 3, pp. 207-236. http://www.numdam.org/item/ASNSP_1960_3_14_3_207_0/

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