https://repository.cern/records/t6ykk-nxn21/files/vol45-issue9-p015-e.pdf,
https://philarchive.org/archive/HALNBP-2,
https://www.jlab.org/sites/default/files/physics/visualizing/pdf/24x36/Module V 24x36.pdf,
https://cds.cern.ch/record/1728615/files/vol3-issue7-p089-e.pdf,
https://www.jstor.org/stable/10.1086/498591,
https://wp.hse.ru/data/2023/12/05/2109997428/214HUM2023.pdf,
https://inventario.ellaurel.gob.ec/virtual-library/u24KTE/1TW059/NielsBohrContributionToScience.pdf,
https://www.ias.ac.in/article/fulltext/reso/018/10/0877-0884,
https://www.mccormick.northwestern.edu/etopia/archive/2008/docs/Copenhagen_info.pdf,
https://sk.sagepub.com/hnbk/edvol/download/hdbk_leadershipscitech/chpt/quantum-mechanics.pdf,
https://www.mccormick.northwestern.edu/etopia/archive/2008/docs/Copenhagen_info.pdf,
https://sk.sagepub.com/hnbk/edvol/download/hdbk_leadershipscitech/chpt/quantum-mechanics.pdf,
https://pubs.aip.org/aapt/ajp/article-pdf/60/11/1051/11774468/1051_1_online.pdf,
http://acervo.if.usp.br/uploads/IF/MS/II/IF-MS-II-01-014-0145-01451-0.pdf,
https://nbarchive.ku.dk/doc/abstracts2013.pdf,
https://scholarworks.utep.edu/cgi/viewcontent.cgi?article=2684&context=cs_techrep,
http://philsci-archive.pitt.edu/21172/1/perovic_review.pdf,
https://lirias.kuleuven.be/retrieve/c633f8bc-1bf7-4659-973b-9ae2045395ff,
https://www.worldscientific.com/doi/pdf/10.1142/9789814571616_0009?download=true&srsltid=AfmBOopBlrDbjWuRU_xy-TGTh1G_RmEoaKnnNXNkw6pNSpjN5p-hismw,
https://likuyani.cdf.go.ke/browse/5P8043/HomePages/NielsBohrContributionToScience.pdf,
https://www.mccormick.northwestern.edu/etopia/archive/2008/docs/Copenhagen_info.pdf,
https://www.degruyterbrill.com/document/doi/10.1515/9781400864492.149/pdf?licenseType=restricted&srsltid=AfmBOopcWYB-ROFoWYcJBUdjgPrN_lSI3smh801QNsRxkIwwNHOMFhF3,
https://vaccination.gov.ng/uploaded-files/ord6ii/9S9172/niels-bohr_contribution-to__science.pdf,
https://www.europhysicsnews.org/articles/epn/pdf/2014/02/epn2014-45-2.pdf,
https://wuli.wiki/files/05341392ff30b7d4.pdf,
http://publ.royalacademy.dk/backend/web/uploads/2019-10-28/AFL 5/AFL 5/SP_132_00_00_1986_6188/SP_132_26_00_1986_6215.pdf,
https://api.pageplace.de/preview/DT0400.9780195347227_A23602875/preview-9780195347227_A23602875.pdf,
https://journals.shareok.org/soonermagazine/article/download/9683/9682/9389,
https://www.tandfonline.com/doi/pdf/10.1080/02841860050216016,
https://cdn.prod.website-files.com/66001fd597fdea31bc3afaf5/68c8432091d9d39443ca83ff_63928919527.pdf,
https://revistas.cbpf.br/index.php/CS/article/view/56/268,
https://euresis.org/wp-content/uploads/2019/06/EJv2id3_Segre.pdf,
https://journals.shareok.org/soonermagazine/article/download/9683/9682/9389,
https://philarchive.org/archive/HALBEL-2,
https://d-nb.info/1371197253/34,
https://repo.uni-hannover.de/bitstreams/1657a397-f8a1-42c3-b8f4-a6b4852859b5/download,
https://nba-old.nbi.dk/files/brochure.pdf,
https://www.zygonjournal.org/article/11995/galley/24367/download/,
https://cdn.prod.website-files.com/66001fd597fdea31bc3afaf5/68c8432091d9d39443ca83ff_63928919527.pdf,
https://unene.ca/wp-content/uploads/2025/11/1-Appendix-Historical-Background-1.pdf,