TY - JOUR AU - Węgrzynowski, Stefan TI - Parallel and nonparallel $s$-structures on Euclidean spaces JO - Czechoslovak Mathematical Journal PY - 1983 SP - 76 EP - 94 VL - 33 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1983.101857/ DO - 10.21136/CMJ.1983.101857 LA - en ID - 10_21136_CMJ_1983_101857 ER -