@article{JRAM_1994__455_153658,
     author = {Charles P. Boyer and K. Galicki and B. Mann},
     title = {The geometry and topology of {3-Sasakian} manifolds.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {183--220},
     publisher = {mathdoc},
     volume = {455},
     year = {1994},
     zbl = {0889.53029},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1994__455_153658/}
}