@article{ref1,
title="Individual differences and intra-individual variability in motor performance under continuous-practice conditions",
journal="Human factors",
year="1969",
author="Stelmach, G. E.",
volume="11",
number="3",
pages="201-206",
abstract="Abstract unavailable.",
language="",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}