%0 Journal Article %A Matumoto, Hisayosi %T $C^{-\infty }$-Whittaker vectors corresponding to a principal nilpotent orbit of a real reductive linear Lie group, and wave front sets %J Compositio Mathematica %D 1992 %P 189-244 %V 82 %N 2 %I Kluwer Academic Publishers %U http://www.numdam.org/item/CM_1992__82_2_189_0/ %G en %F CM_1992__82_2_189_0