@article{GDZPPN002425661, title = {Summability of Martingales with Two-dimensional Parameter.}, journal = {Mathematische Zeitschrift}, volume = {177}, year = {1981}, pages = {381-386}, zbl = {0451.60048}, url = {http://dml.mathdoc.fr/item/GDZPPN002425661} }
Baigger, Günter. Summability of Martingales with Two-dimensional Parameter.. Mathematische Zeitschrift, Tome 177 (1981) pp. 381-386. http://gdmltest.u-ga.fr/item/GDZPPN002425661/