@article{JLT_1997_7_2_a5,
     author = {E. N. Reyes},
     title = {Commuting {Operators} and {Class} {Functions}},
     journal = {Journal of Lie theory},
     pages = {239--244},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {1997},
     url = {http://geodesic.mathdoc.fr/item/JLT_1997_7_2_a5/}
}