@article{MAN_1987__278_164291,
     author = {D. Shelstad and R.P. Langlands},
     title = {On the {Definition} of {Transfer} {Factors.}},
     journal = {Mathematische Annalen},
     pages = {219--272},
     publisher = {mathdoc},
     volume = {278},
     year = {1987},
     zbl = {0644.22005},
     url = {http://geodesic.mathdoc.fr/item/MAN_1987__278_164291/}
}