@article{GDZPPN002207591,
title = {The symplectic geometry of affine connenctions on surfaces.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {405},
year = {1990},
pages = {126-159},
zbl = {0692.53015},
url = {http://dml.mathdoc.fr/item/GDZPPN002207591}
}
Goldman, William M. The symplectic geometry of affine connenctions on surfaces.. Journal für die reine und angewandte Mathematik, Tome 405 (1990) pp. 126-159. http://gdmltest.u-ga.fr/item/GDZPPN002207591/