David B. Spiegler (1973). Many times, subtropical cyclones have a small warm core. Reply.Arxivləşdirilib 2009-02-25 at the Wayback Machine Monthly Weather Review, April 1973, p. 380. Retrieved on 2008-04-20.
David B. Spiegler (1973). Many times, subtropical cyclones have a small warm core. Reply.Arxivləşdirilib 2009-02-25 at the Wayback Machine Monthly Weather Review, April 1973, p. 380. Retrieved on 2008-04-20.