%0 Journal Article %A K. Chaudhury %T A note on orthogonality preserving operators %J Matematic̀Œki vesnik %D 1973 %P 309 %V 25 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/MV_1973_25_1_a38/ %F MV_1973_25_1_a38