@article{CM_1968__19_3_213_0,
     author = {Veldkamp, F. D.},
     title = {Unitary groups in projective octave planes},
     journal = {Compositio Mathematica},
     pages = {213--258},
     publisher = {Wolters-Noordhoff Publishing},
     volume = {19},
     number = {3},
     year = {1968},
     mrnumber = {236815},
     zbl = {0195.50402},
     language = {en},
     url = {http://www.numdam.org/item/CM_1968__19_3_213_0/}
}