@article{MM2_1980__33_154736,
     author = {Dan, Jr. Burns and Steven Shnider},
     title = {Projective {Connections} in {CR} {Geometry.}},
     journal = {Manuscripta mathematica},
     pages = {1--26},
     publisher = {mathdoc},
     volume = {33},
     year = {1980},
     zbl = {0478.32018},
     url = {http://geodesic.mathdoc.fr/item/MM2_1980__33_154736/}
}