Initial phase and frequency modulations of pumping a playground swing User volossaveroniki, in the r/Sciences - Science on Reddit subreddit, 06 Jun 2023
Initial phase and frequency modulations of pumping a playground swing User BestOfNoPoliticsBot, in the Science but without politics! subreddit, 18 May 2023
Initial phase and frequency modulations of pumping a playground swing User fchung, in the Reddit Science subreddit, 18 May 2023