@article{1183743340,
author = {Sieg, Wilfried},
title = {Review: Stephen G. Simpson, Friedman's Research on Subsystems of Second Order Arithmetic},
journal = {J. Symbolic Logic},
volume = {55},
number = {1},
year = {1990},
pages = { 870-874},
language = {en},
url = {http://dml.mathdoc.fr/item/1183743340}
}
Sieg, Wilfried. Review: Stephen G. Simpson, Friedman's Research on Subsystems of Second Order Arithmetic. J. Symbolic Logic, Tome 55 (1990) no. 1, pp. 870-874. http://gdmltest.u-ga.fr/item/1183743340/