@article{TSG_2000-2001__19__41_0,
     author = {Kamada, Hiroyuki and Nayatani, Shin},
     title = {Quaternionic analogue of {CR} geometry},
     journal = {S\'eminaire de th\'eorie spectrale et g\'eom\'etrie},
     pages = {41--52},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {19},
     year = {2000-2001},
     mrnumber = {1909075},
     zbl = {1044.53032},
     language = {en},
     url = {http://www.numdam.org/item/TSG_2000-2001__19__41_0/}
}