@article{PMIHES_1965__25__5_0,
     author = {Iwahori, Nagayoshi and Matsumoto, Hideya},
     title = {On some {Bruhat} decomposition and the structure of the {Hecke} rings of $p$-adic {Chevalley} groups},
     journal = {Publications Math\'ematiques de l'IH\'ES},
     pages = {5--48},
     publisher = {Institut des Hautes \'Etudes Scientifiques},
     volume = {25},
     year = {1965},
     mrnumber = {185016},
     zbl = {0228.20015},
     language = {en},
     url = {http://www.numdam.org/item/PMIHES_1965__25__5_0/}
}