@article{GDZPPN002041995, title = {Critical sets in back circulant latin squares.}, journal = {Aequationes mathematicae}, volume = {52}, year = {1996}, pages = {157-179}, zbl = {0859.05025}, url = {http://dml.mathdoc.fr/item/GDZPPN002041995} }
Donovan, Diane; Cooper, Joan. Critical sets in back circulant latin squares.. Aequationes mathematicae, Tome 52 (1996) pp. 157-179. http://gdmltest.u-ga.fr/item/GDZPPN002041995/