Bozorgmehr, Mehdi, Claudia Der-Martirosian, and Georges Sabagh. "Middle Easterners: A New Kind of Immigrant" (Chapter 12). In: Waldinger, Roger and Mehdi Bozorgmehr (editors). Ethnic Los Angeles. Russell Sage Foundation, December 5, 1996. Start page 345. ISBN 1610445473, 9781610445474. Cited: p. 347. "[...]in Beverly Hills, Bel Air, and Brentwood, known in local parlance as "the three Bs.""
Melton, Mary. "The Stars of Star Maps." Los Angeles Times. August 25, 1996. "Each map tends to cover the "three Bs": Brentwood, Bel-Air and Beverly Hills. A few toss in a Malibu sidebar."
[2] Diversity "measures the probability that any two residents, chosen at random, would be of different ethnicities. If all residents are of the same ethnic group it's zero. If half are from one group and half from another it's .50." —Los Angeles Times