TY - JOUR AU - Octavio Páez Osuna AU - Rodolfo San Agustín Chi TI - The combinatorial (19_4) configurations JO - Ars Mathematica Contemporanea PY - 2012 SP - 235 EP - 241 VL - 5 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.26493/1855-3974.216.59d/ DO - 10.26493/1855-3974.216.59d LA - en ID - 10_26493_1855_3974_216_59d ER -