@article{JRAM_1982__337_152488,
     author = {Larry J. Gerstein},
     title = {A remark on the quadratic analogue of the {Quillen-Suslin} theorem.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {166--170},
     publisher = {mathdoc},
     volume = {337},
     year = {1982},
     zbl = {0486.13005},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1982__337_152488/}
}