RIVERSIDE, Calif. - The California Public Employees' Retirement System (CalPERS), a creditor in the Chapter 9 bankruptcy of the City of San Bernardino, Calif., on Aug. 2 filed a brief arguing that the city has not shown that it is eligible to file for bankruptcy (In Re: City of San Bernardino, Calif., No. 12-28006, Chapter 9, C.D. Calif. Bkcy.).