New York Times, New York, New York, Sunday, October 13, 1963 - Page 143
Chess: Manhattan ‘Rapid Transit’ by Al Horowitz
“The explosive maneuver is prepared by the innocuous-looking developing move, 9 B-B4. The United States champion, Bobby Fischer, was among the first to recognize the merits of this bishop deployment in the Sicilian defense. Heretofore, B-K2 was invariably routine.
The Sicilian is constantly being improved upon for both White and Black. Ignorance of the hidden meanings in the new findings quickly provokes punishment.