@inbook{https://resolver.caltech.edu/CaltechAUTHORS:20130912-145816021, title = "Flow visualization VII", chapter = "Vortex ring generation due to the coalescence of a water drop at a free surface", year = "1995", url = "https://resolver.caltech.edu/CaltechAUTHORS:20130912-145816021", id = "record", isbn = "9781567000368" }