https://www.historyextra.com/period/tudor/anne-boleyn-death-execution-where-buried-how-die/
https://nymag.com/nymetro/news/columns/witness/9183/
https://www.livescience.com/39219-can-severed-head-live.html
https://www.damninteresting.com/lucid-decapitation
https://www.wired.com/2011/11/mexican-blogger-decapitated/
https://slate.com/news-and-politics/2013/11/guillotine-death-penalty-lethal-injection-is-cruel-and-unusual-punishment-slicing-off-the-head-is-the-better-way-to-go.html
https://www.ripleys.com/weird-news/decapitation-conversation/
https://theconversation.com/why-the-guillotine-may-be-less-cruel-than-execution-by-slow-poisoning-121034
https://en.wikipedia.org/wiki/Halifax_Gibbet
https://en.wikipedia.org/wiki/Margaret_Pole,_Countess_of_Salisbury
https://www.history.co.uk/article/8-famous-botched-executions
https://science.howstuffworks.com/science-vs-myth/extrasensory-perceptions/lucid-decapitation.htm
https://en.wikipedia.org/wiki/Mike_the_Headless_Chicken
https://en.wikipedia.org/wiki/Anne_Boleyn
https://www.history.com/news/anne-boleyn-beheaded-facts#:~:text=Found%20guilty%20of%20charges%20including,beheaded%20by%20a%20French%20swordsman.
https://theconversation.com/did-anne-boleyn-really-try-to-speak-after-being-beheaded-106650
http://www.bbc.co.uk/history/british/tudors/anne_boleyn_01.shtml
https://en.wikipedia.org/wiki/Decapitation
https://books.google.co.th/books?id=Os8EAAAAYAAJ&pg=PA219&lpg=PA219&dq=%22Now,+with+my+machine,+I+cut+off+your+head+in+the+twinkling+of+an+eye,+and+you+never+feel+it!%22&source=bl&ots=PpVfiBwQiN&sig=ACfU3U1k5AlDDlGJkbAhYebS1a8140F62A&hl=en&sa=X&ved=2ahUKEwiq25jYw8frAhXZb30KHTCdD34Q6AEwDHoECAMQAQ#v=onepage&q=%22Now%2C%20with%20my%20machine%2C%20I%20cut%20off%20your%20head%20in%20the%20twinkling%20of%20an%20eye%2C%20and%20you%20never%20feel%20it!%22&f=false
https://en.wikipedia.org/wiki/Guillotine#:~:text=After%20its%20adoption%2C%20the%20device,guillotined%20on%2010%20September%201977.
https://www.bbc.com/news/magazine-24772724
https://www.salon.com/2015/02/03/what_a_beheading_feels_like_the_science_the_gruesome_spectacle_and_why_we_cant_look_away/
https://www.livescience.com/15264-brain-death-decapitation.html
https://www.straightdope.com/21342318/does-the-head-remain-briefly-conscious-after-decapitation-revisited