!!Lodewijk Woltjer

[Obituary|https://www.eso.org/public/about-eso/dg-office/lwoltjer], European Southern Observatory (ESO)\\
[Obituary|https://www.universiteitleiden.nl/en/news/2019/08/in-memorian-lodewijk-woltjer], Leiden University\\
[Obituary|https://www.iau.org/news/announcements/detail/ann19055], International Astronomical Union
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