TY  - JOUR
AU  - Kyungyong Lee
AU  - Ralf Schiffler
TI  - Positivity for cluster algebras
JO  - Annals of mathematics
PY  - 2015
SP  - 73
EP  - 125
VL  - 182
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4007/annals.2015.182.1.2/
DO  - 10.4007/annals.2015.182.1.2
LA  - en
ID  - 10_4007_annals_2015_182_1_2
ER  -