@article{ref1,
title="Observations of the failure of a vertical cut in clay at Welland, Ontario: discussion",
journal="Canadian geotechnical journal",
year="1972",
author="Penner, Frank",
volume="9",
number="1",
pages="123-124",
abstract="<p>[Abstract unavailable]</p><p>Language: en</p>",
language="en",
issn="0008-3674",
doi="10.1139/t72-012",
url="http://dx.doi.org/10.1139/t72-012"
}