@article{10_21136_MB_2000_126265,
     author = {Misiak, Aleksander and Ry\.z, Alicja},
     title = {$n$-inner product spaces and projections},
     journal = {Mathematica Bohemica},
     pages = {87--97},
     publisher = {mathdoc},
     volume = {125},
     number = {1},
     year = {2000},
     doi = {10.21136/MB.2000.126265},
     mrnumber = {1752081},
     zbl = {0970.46013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.2000.126265/}
}