@article{JRAM_1982__337_152487,
     author = {Hans Werner Schuster},
     title = {Locally free resolutions of coherent sheaves on surfaces.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {159--165},
     year = {1982},
     volume = {337},
     zbl = {0499.32020},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1982__337_152487/}
}