@article{TM_1999_226_a16,
     author = {J. R. Klauder},
     title = {Product {Representations} and the {Quantization} of {Constrained} {Systems}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {212--222},
     year = {1999},
     volume = {226},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TM_1999_226_a16/}
}