TY - JOUR AU - M. Masal TI - (m+1)-dimensional spacelike parallel $p_i$-equidistant ruled surfaces in the Minkowski space $R_1^n $ JO - Novi Sad Journal of Mathematics PY - 2006 SP - 55 EP - 63 VL - 36 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/NSJOM_2006_36_1a_6/ ID - NSJOM_2006_36_1a_6 ER -