@article{ref1,
title="Analysis of casualties in children and adolescents in primary schools in the Poznan region",
journal="Pediatria Polska",
year="1961",
author="Jankowiak, A. and Bartkowiak, Z.",
volume="36",
number="",
pages="551-556",
abstract="<p>[Abstract unavailable]</p> <p>Language: pl</p>",
language="pl",
issn="0031-3939",
doi="",
url="http://dx.doi.org/"
}