@article{ARM_1990__26_4_a5,
     author = {Jany\v{s}ka, Josef},
     title = {Remarks on the {Nijenhuis} tensor and almost complex connections},
     journal = {Archivum mathematicum},
     pages = {229--239},
     publisher = {mathdoc},
     volume = {26},
     number = {4},
     year = {1990},
     mrnumber = {1188975},
     zbl = {0738.53014},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ARM_1990__26_4_a5/}
}