@article{00617006, title = {On }, journal = {Bulletin of the Belgian Mathematical Society - Simon Stevin}, volume = {1}, year = {1994}, pages = {301-328}, zbl = {0803.51006}, language = {en}, url = {http://dml.mathdoc.fr/item/00617006} }
Bader, L.; Lunardon, G; Payne, S.E. On . Bulletin of the Belgian Mathematical Society - Simon Stevin, Tome 1 (1994) pp. 301-328. http://gdmltest.u-ga.fr/item/00617006/