@article{ZNSL_2009_373_a11,
     author = {V. Y. Pan},
     title = {Root-squaring with {DPR1} matrices},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {189--193},
     publisher = {mathdoc},
     volume = {373},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2009_373_a11/}
}