@article{NUMA_1967__10_131796,
     author = {J. MEINGUET},
     title = {Optimal {Approximation} and {Error} {Bounds} in {Seminormed} {Spaces.}},
     journal = {Numerische Mathematik},
     pages = {370--388},
     publisher = {mathdoc},
     volume = {10},
     year = {1967},
     zbl = {0261.65009},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1967__10_131796/}
}