E24, Sophie Lorch-Falch, 11.03.2018: https://e24.no/privat/norge/naa-har-vi-historisk-lave-foedselstall-ingentar-tak-i-det-foer-det-er-for-sent/24277638
Physiological Reviews, NE Skakkebaek mfl, januar 2016: https://www.ncbi.nlm.nih.gov/pubmed/26582516#
forskning.no, Jan Even Andersen, 04.01.2019: https://forskning.no/kina-ntb/faerre-kinesere-for-forste-gang-pa-70-ar/1276223
CNN, Euan McKirdy, 08.01.2019: https://edition.cnn.com/2019/ 01/07/asia/china-population-decline-study-intl/index.html
forskning.no, Johanne Uhrenholt Kusnitzoff og Ida Eriksen, 04.06.2017: https://forskning.no/kjemi-hormoner/hvor-farlige-erhormonforstyrrende-stoffer/343194
The Cut, Daniel Engber, 02.10.2018: https://www.thecut.com/2018/10/why-is-everybody-freaking-out-about-declining-spermcounts.html
South China Morning Post, Mandy Zuo, 27.10.2018: https://www.scmp.com/news/china/society/article/2170462/falling-spermcounts-china-may-hurt-effort-boost-birth-rate
The Diplomat, Neeta Lai, 30.05.2018: https://thediplomat.com/2018/05/indias-hidden-infertility-struggles/
Japanese sperm in pollution scare, BBC News, 28.05.1998: http://news.bbc.co.uk/2/hi/health/102138.stm
The Japan Times, Tomoko Otake, 24.05.2017: https://www.japantimes.co.jp/news/2017/05/24/national/science-health/longtaboo-expert-says-japan-must-examine-male-infertility-amid-falling-birthrate/#.XGqpVYXWS0U
BBC News, James Gallagher, 09.11.2018: https://www.bbc.com/news/health-46118103
BBC News, Robert Peston, 07.09.2015: https://www.bbc.com/news/business-34172729
Express, Harvey Gavin, 09.09.2018: https://www.express.co.uk/news/world/1015203/germany-immigration-eumigrant-crisis-angela-merkel-horst-seehofer
Quartz, Aamna Mohdin, 24.01.2018: https://qz.com/1187819/country-ranking-worlds-fastest-shrinking-countries-are-in-eastern-europe/
The Guardian, Darrell Bricker og John Ibbitson, 27.01.2019: https://www.theguardian.com/world/2019/jan/27/what-goes-up-population-crisis-wrong-fertility-rates-decline og Aftenposten, Per Kristian Bjørkeng, 06.04.2019: https://www.aftenposten.no/kultur/i/8wrqJd/Tenk-omvi-ikke-overbefolker-verden-likevel
Daily Mail, Mia de Graaf og Natalie Rahhal, 07.10.2018: https://www.dailymail.co.uk/health/article-6249825/The-male-fertility-crisis-continues-Quality-sperm-plummets.html og Fertility and Sterility, A.W. Tiegs mfl, 08.10.2018: https://www.fertstert.org/article/S0015-0282(18)30685-X/abstract
Prospect, Philip Ball, 31.07.2018: https://www.prospectmagazine.co.uk/magazine/ball-on-sperm-counts-falling-menfertility
Business Insider, Peter Kotecki, 18.12.2018: https://www.businessinsider.com/south-korea-birth-rate-crisis-cash-rich-2018-12?r= US&IR=T
Asian Journal of Andrology, Harry Fisch og Stephen R. Braun, 07.01.2013:http://www.asiaandro.com/news/upload/20130912-aja 2012143a.pdf
Newsweek, Ronald Bailey, 06.08.2017: https://www.newsweek.com/does-declining-sperm-count-spell-endhumanity-646640
Psychology Today, Robert D. Martin, 20.04.2017: https://www.psychologytoday.com/us/blog/how-we-do-it/201704/goinggoing-gone-human-sperm-counts-are-plunging
Urologic Clinics of North America, Harry Fisch, 2008: https://harryfisch.com/wp-content/uploads/PDF-RPDeclining-Worldwide-Sperm-Counts-Disproving-a-Myth.pdf og harryfisch.com, Harry Fisch, 14.08.2018: https://harryfisch.com/theimpact-of-eating-more-nuts-on-your-sperm-quality/
Babyverden, Maren Eriksen, april 2018: https://www.babyverden.no/prover/det-meste-du-trenger-a-vite-om-sadkvalitet/
Familieklubben, Rigmor Sjaastad Hagen, 23.11.2017: https://familieklubben.no/familieliv/ufrivillig-barnloes-daarlig-saedkvalitetet-tabu/165
The British Medical Journal, Susan Mayor, 06.10.2016: https://www.bmj.com/content/355/bmj.i5415
Indian Journal of Urology, M.B. Shamsi mfl, januar-mars 2011: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3114572/
NRK, Solveig Husøy, 01.03.2010: https://www.nrk.no/livsstil/norske-menn-har-darligst-saed-1.7017443
Ikke vent for lenge med å bli pappa, Klikk.no, 08.06.2013: https://www.klikk.no/foreldre/bligravid/ikke-vent-for-lengemed-a-bli-pappa-2359541
Sædkvalitet og alder, Universitetet i Oslo, Charlotte Fleischer og Sunniva Sagsveen, 10.01.2013: https://www.duo.uio.no/bitstream/handle/10852/35746/Prosjektoppgavexferdig.pdf?sequence=1
Statistisk sentralbyrå, Anders Falnes-Dalheim, 06.03.2018: https://www.ssb.no/befolkning/artikler-og-publikasjoner/rekordlav-fruktbarhet
The British Medical Journal, Yash S. Kvandwala mfl, 31.10.2018: https://www.bmj.com/content/363/bmj.k43729
TV2.dk, Anders Hjort og Maiken Brusgaard Christensen, 01.04.2018: http://nyheder.tv2.dk/samfund/2018-04-01-hver-fjerde-mand-har-nedsat-saedkvalitet-men-mange-ved-det-ikke-?cid=tv2.dk: Hver%20fjerde%20mand%20har%20nedsat%20sædkvalitet%20–%20men%20mange%20ved%20det%20ikke: article
TV 2, Anine Hallgren, 07.12.2018: https://www.tv2.no/a/ 10265206/