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<strong>OverHolland</strong>, [S.l.], p. 65-75, june 2008.
ISSN 1574-3160. Available at: &lt;<a href="https://journals.open.tudelft.nl/overholland/article/view/1650" target="_new">https://journals.open.tudelft.nl/overholland/article/view/1650</a>&gt;. Date accessed: 21 jan. 2021.
doi: <a href="https://doi.org/10.7480/overholland.2008.7.1650">https://doi.org/10.7480/overholland.2008.7.1650</a>.