@article{1183744177,
author = {Judah, Haim and Shelah, Saharon},
title = {$\triangle^1\_3$-Sets of Reals},
journal = {J. Symbolic Logic},
volume = {58},
number = {1},
year = {1993},
pages = { 72-80},
language = {en},
url = {http://dml.mathdoc.fr/item/1183744177}
}
Judah, Haim; Shelah, Saharon. $\triangle^1_3$-Sets of Reals. J. Symbolic Logic, Tome 58 (1993) no. 1, pp. 72-80. http://gdmltest.u-ga.fr/item/1183744177/