@article{JRAM_1967__225_150775,
     author = {M.A. Al-Bassam},
     title = {On {Laplace's} second order linear differential equations and their equivalent {H-R} transform equations.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {76--84},
     publisher = {mathdoc},
     volume = {225},
     year = {1967},
     zbl = {0146.11203},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1967__225_150775/}
}