@article{JGG_2012_16_2_JGG_2012_16_2_a6,
     author = {J. Proskov\'a},
     title = {Discovery of {Dual} {Quaternions} for {Geodesy}},
     journal = {Journal for geometry and graphics},
     pages = {195--209},
     year = {2012},
     volume = {16},
     number = {2},
     url = {http://geodesic.mathdoc.fr/item/JGG_2012_16_2_JGG_2012_16_2_a6/}
}