TY  - JOUR
AU  - Amini, Omid
TI  - The exchange graph and variations of the ratio of the two Symanzik polynomials
JO  - Annales de l’Institut Henri Poincaré D
PY  - 2019
SP  - 155
EP  - 197
VL  - 6
IS  - 2
UR  - http://www.numdam.org/articles/10.4171/aihpd/68/
DO  - 10.4171/aihpd/68
LA  - en
ID  - AIHPD_2019__6_2_155_0
ER  -