NEW YORK - An academic study of NBA officiating found that white referees called fouls at a greater rate against black players than against white players, The New York Times reported in Wednesday's editions. The study by a University of Pennsylvania assistant professor and Cornell graduate student also found that black officials called fouls more frequently against white players than black, but noted that that tendency was not as pronounced. Justin Wolfers, an assistant professor of business and public policy at Penn's Wharton School, and Joseph Price, a Cornell graduate student in economics, said the difference in calls "is large...