@article{JRAM_1992__429_153430,
     author = {U. Pinkall and D. Ferus and I. Sterling},
     title = {Minimal tori in {S4.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {1--48},
     publisher = {mathdoc},
     volume = {429},
     year = {1992},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1992__429_153430/}
}