[1] Phantom time conspiracy theory - Wikipedia, , https://en.wikipedia.org/wiki/Phantom_time_conspiracy_theory
[2] ファントムタイム仮説 - Wikipedia, , https://ja.wikipedia.org/wiki/%E3%83%95%E3%82%A1%E3%83%B3%E3%83%88%E3%83%A0%E3%82%BF%E3%82%A4%E3%83%A0%E4%BB%AE%E8%AA%AC
[3] The Phantom Time Hypothesis Theory Says That It's Actually 1720, Katie Serena, https://allthatsinteresting.com/phantom-time-hypothesis
[4] Phantom time hypothesis: Are the Middle Ages a medieval forgery? - Big Think, https://bigthink.com/the-past/phantom-time-hypothesis/
[6] Weird Ideas: The Phantom Time Hypothesis – Skeptical Science, , https://www.skeptical-science.com/history/archaeology/weird-ideas-phantom-time-hypothesis/