TY - JOUR AU - Zhelezova, Stela TI - On the extension of a partial solution of d spreads to a parallelism JO - Mathematics and Education in Mathematics PY - 2020 SP - 173 EP - 177 VL - 49 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MEM_2020_49_a18/ LA - en ID - MEM_2020_49_a18 ER -