TY - JOUR AU - Gatial, Ján AU - Kaprálik, Peter TI - On median point of the system of elements of $A$-structure JO - Mathematica slovaca PY - 2001 SP - 275 EP - 280 VL - 51 IS - 3 UR - http://geodesic.mathdoc.fr/item/MASLO_2001_51_3_a3/ LA - en ID - MASLO_2001_51_3_a3 ER -