TY  - JOUR
AU  - Goulden, I. P.
AU  - Jackson, D. M.
TI  - Maps in Locally Orientable Surfaces and Integrals Over Real Symmetric Surfaces
JO  - Canadian journal of mathematics
PY  - 1997
SP  - 865
EP  - 882
VL  - 49
IS  - 5
UR  - http://geodesic.mathdoc.fr/articles/10.4153/CJM-1997-045-9/
DO  - 10.4153/CJM-1997-045-9
ID  - 10_4153_CJM_1997_045_9
ER  -