@article{CMUC_2006_47_2_a5,
     author = {Jaftha, J. J.},
     title = {The conjugate of a product of linear relations},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {265--273},
     year = {2006},
     volume = {47},
     number = {2},
     mrnumber = {2241531},
     zbl = {1150.47002},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_2006_47_2_a5/}
}