@article{01102631,
title = {Tree martingales and a.e. convergence of Vilenkin-Fourier series.},
journal = {Mathematica Pannonica},
volume = {8},
year = {1997},
pages = {17-36},
zbl = {0881.42020},
language = {en},
url = {http://dml.mathdoc.fr/item/01102631}
}
Schipp, F.; Weisz, F. Tree martingales and a.e. convergence of Vilenkin-Fourier series.. Mathematica Pannonica, Tome 8 (1997) pp. 17-36. http://gdmltest.u-ga.fr/item/01102631/