The university, near The Hague, says the newly-unearthed paper will be kept in its Lorentz Institute for Theoretical Physics.

莱登大学位于海牙附近，学校表示这份最新发现的手稿将被保存在罗伦茨理论物理研究所。

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Svetla Yosifova is a lecturer in EU law at The Hague University of Applied Science.

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Leiden lies some 20km (13 miles) north-east of The Hague, and is home to the country's oldest university.

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Politically too, he does not fit the usual Labour template, having been, briefly, a member of the Oxford University Conservative Association at the same time as William Hague.

BBC: Chris Bryant