@article{JRAM_1970__245_151059,
     author = {B.L.R. Shawyer},
     title = {General absolute {Borel-type} methods.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {81--90},
     publisher = {mathdoc},
     volume = {245},
     year = {1970},
     zbl = {0202.34401},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1970__245_151059/}
}