TY  - JOUR
AU  - Vladimir Janković
TI  - Quadratic functions in several variables
JO  - The Teaching of Mathematics
PY  - 2005
SP  - 53 
VL  - VIII
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TM2_2005_VIII_2_a0/
LA  - en
ID  - TM2_2005_VIII_2_a0
ER  -