@article{10_4153_CMB_2013_015_9,
     author = {Christensen, Ole and Kim, Hong Oh and Kim, Rae Young},
     title = {On {Parseval} {Wavelet} {Frames} with {Two} or {Three} {Generators} via the {Unitary} {Extension} {Principle}},
     journal = {Canadian mathematical bulletin},
     pages = {254--263},
     year = {2014},
     volume = {57},
     number = {2},
     doi = {10.4153/CMB-2013-015-9},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-2013-015-9/}
}