@article{MZ_1980__174_172996,
     author = {M.M. Rao},
     title = {Convolutions of {Vector} {Fields-I.}},
     journal = {Mathematische Zeitschrift},
     pages = {63--80},
     publisher = {mathdoc},
     volume = {174},
     year = {1980},
     zbl = {0442.43015},
     url = {http://geodesic.mathdoc.fr/item/MZ_1980__174_172996/}
}