Mooney, Chris. Chapter 4: Lay that Matrix Down. Storm World. Harcourt. 2007: 70. ISBN 978-0-15-101287 请检查
...1984...Gray also launched the endeavor that would make him most famous: a seasonal forecasting scheme for the Atlantic basin, which would predict the number of hurricanes and tropical storms months before their actual arrival. ... It's hard to overstate the breakthrough that Gray had achieved with his forecasting scheme.