@article{SORT_2008_2008_1_a5,
     author = {Willems, Priscila and  Galindo Villardon, M. Purificaci\'on},
     title = {Canonical non-symmetrical correspondence analysis: an alternative in constrained ordination.},
     journal = {Sort},
     pages = {93-112},
     publisher = {mathdoc},
     volume = {32},
     number = {1},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SORT_2008_2008_1_a5/}
}