@article{ref1,
title="Proposed Method for Calculation by Simplex Method of Hitchcock's Transportation Problem",
journal="OR: Operational research quarterly (1953)",
year="1956",
author="de Lasala, J.",
volume="7",
number="3",
pages="96-96",
abstract="<p>[Abstract unavailable]</p>",
language="",
issn="1473-2858",
doi="",
url="http://dx.doi.org/"
}