On irreducibility of standard modules for generic representations

Casselman, William; Shahidi, Freydoon

Annales scientifiques de l'École Normale Supérieure, Volume 31 (1998) p. 561-589

The unramified principal series of $p$-adic groups. I. The spherical function

Casselman, W.

Compositio Mathematica, Volume 40 (1980) p. 387-406

The unramified principal series of $p$-adic groups. II. The Whittaker function

Casselman, W.; Shalika, J.

Compositio Mathematica, Volume 41 (1980) p. 207-231

The $n$-cohomology of representations with an infinitesimal character

Casselman, William; Osborne, M. Scott

Compositio Mathematica, Volume 31 (1975) p. 219-227