@book
{TN_libero_mab2,
author = {
Sario, Leo
},
title = {
Countability axiom in the theory of Riemann surfaces
},
publisher = {Suomalainen Tiedeakatemia},
year = {1958},
booktitle = {Suomalaisen Tiedeakatemian toimituksia ; Sarja A = Series A. 1, Mathematica ; 250,32},
booktitle = {Proceedings of the International Colloquium on the Theory of Functions},
address = {
Helsinki
},
url = {
http://slubdd.de/katalog?TN_libero_mab2
}
}