Times-Picayune/The New Orleans Advocate 2020年6月19日閲覧 ^ John Schwartz(2020年4月16日)Richard Passman, Space-Age Engineer Who Kept His Secrets, Dies at 94(英語)The New York
Joerg M.; Barrell, David J. A.; Andersen, Bjørn G.; Finkel, Robert C.; Schwartz, Roseanne; Doughty, Alice M. et al. (2010). “Glacier advance in southern