@article{JRAM_1989__400_153166,
     author = {Peter J. Braam and Jacques Hurtubise},
     title = {Instantons on {Hopf} surfaces and monopoles on solid tori.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {146--172},
     year = {1989},
     volume = {400},
     zbl = {0669.32012},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1989__400_153166/}
}