@article{JRAM_1964__216_150648,
     author = {M.A. Al-Bassam},
     title = {On certain types of {H-R} transform equations and their equivalent differential equations.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {91--100},
     publisher = {mathdoc},
     volume = {216},
     year = {1964},
     zbl = {0187.36502},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1964__216_150648/}
}