@article{ref1,
title="Methods of recording movement. An appraisal of photographic techniques for the study of motor performance and learning",
journal="American journal of physical medicine",
year="1960",
author="Hellebrandt, F. A. and Hellebrandt, E. T. and White, C. H.",
volume="39",
number="",
pages="178-183",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0002-9491",
doi="",
url="http://dx.doi.org/"
}