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. 2017 Nov 28;7(2):148–159. doi: 10.1080/20476965.2017.1403675

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© 2017 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group on behalf of the Operational Research Society

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (CC-BY-NC-ND) (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way.

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\begin{matrix} Y_{db} \in {0, 1} \forall d, b \end{matrix}

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