@article{AFM_1983_8_1_a3,
     author = {Herbert Gross and Hans A. Keller},
     title = {On the problem of classifying infinite chains in projective and orthogonal geometry},
     journal = {Annales Fennici Mathematici},
     pages = {67--86},
     year = {1983},
     volume = {8},
     number = {1},
     doi = {10.5186/aasfm.1983.0812},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1983.0812/}
}