@article{FORUM_1989__1_3_141617,
     author = {JIMMIE D. LAWSON},
     title = {Ordered {Manifolds,} {Invariant} {Cone} {Fields,} and {Semigroups.}},
     journal = {Forum mathematicum},
     pages = {273--308},
     publisher = {mathdoc},
     volume = {1},
     number = {3},
     year = {1989},
     zbl = {0672.53041},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1989__1_3_141617/}
}