@article{NUMA_1968__12_131890,
     author = {J.J. GOEL},
     title = {Construction of {Basic} {Functions} for {Numerical} {Utilisation} of {Ritz's} {Method.}},
     journal = {Numerische Mathematik},
     pages = {435--447},
     publisher = {mathdoc},
     volume = {12},
     year = {1968},
     zbl = {0271.65061},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1968__12_131890/}
}