@article{ref1,
title="Selectivity versus summation in multiple observation tasks: evidence with spectrum parameter noise in speech",
journal="Acta psychologica",
year="1973",
author="Haggard, M.",
volume="37",
number="5",
pages="285-299",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0001-6918",
doi="",
url="http://dx.doi.org/"
}