TY  - JOUR
AU  - Aaron Melman
TI  - A somewhat unexpected concavity
JO  - The Teaching of Mathematics
PY  - 2013
SP  - 18
VL  - 2013
IS  - 30
PB  - mathdoc
UR  - https://geodesic-test.mathdoc.fr/item/TM_2013__2013_30_261753/
LA  - en
ID  - TM_2013__2013_30_261753
ER  -