%0 Journal Article %A J. Friedrich %T Extension of Positive Definite Functions on Lie Groups %J Journal of Lie Theory %D 1991 %P 225-234 %V 1 %N 2 %U https://jolt.centre-mersenne.org/articles/10.5802/jolt.23/ %R 10.5802/jolt.23 %F JOLT_1991_1_2_a11