@article{JRAM_1899__120_149064,
     author = {Thomas Craig},
     title = {Applications of certain partial differential equations derived from {Codazzis} equations.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {165--188},
     publisher = {mathdoc},
     volume = {120},
     year = {1899},
     zbl = {30.0323.02},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1899__120_149064/}
}