@ARTICLE {,
title = {52. Medzinárodná matematická olympiáda},
author = {Novotný, Peter},
journal = {Obzory matematiky, fyziky a informatiky},
year = {2011},
volume = {40},
number = {3},
pages = {51--54},
issn = {1335-4981},
note = {Informácie},
}