@article{NUMA_1986__50_133159,
     author = {Ludwig Kohaupt},
     title = {Optimal {L...-Error} {Estimates} for {Piecewise} {Linear} {Finite} {Elements} in {Irn} for 1...n...3.},
     journal = {Numerische Mathematik},
     pages = {353--362},
     publisher = {mathdoc},
     volume = {50},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1986__50_133159/}
}