@article{MZ_1969__111_171205,
     author = {Jean Doyen},
     title = {Sur la structure de certains syst\`emes triples de {Steiner.}},
     journal = {Mathematische Zeitschrift},
     pages = {289--300},
     publisher = {mathdoc},
     volume = {111},
     year = {1969},
     zbl = {0182.02702},
     url = {http://geodesic.mathdoc.fr/item/MZ_1969__111_171205/}
}