@article{ref1,
title="Schematic simulation: a technique for the design and development of a complex system",
journal="Human factors",
year="1964",
author="Alexander, L. T. and Cooperband, A. S.",
volume="6",
number="",
pages="87-92",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0018-7208",
doi="",
url="http://dx.doi.org/"
}