@article{701426,
     title = {Constrained Hamiltonians: a homological approach},
     booktitle = {Proceedings of the Winter School "Geometry and Physics"},
     series = {GDML\_Books},
     publisher = {Circolo Matematico di Palermo},
     address = {Palermo},
     year = {1987},
     pages = {[239]-252},
     mrnumber = {MR0946729},
     zbl = {0644.58001},
     url = {http://dml.mathdoc.fr/item/701426}
}

Stasheff, James. Constrained Hamiltonians: a homological approach, dans Proceedings of the Winter School "Geometry and Physics", GDML_Books,  (1987), pp. [239]-252. http://gdmltest.u-ga.fr/item/701426/