found: Valdés Cantera, A. Formell en tres tiempos (1965-1988), 1988:p. 1 (Juan Formell, popular Cuban composer and arranger)
found: Juan Formell y los Van Van, 200-?:p. 6 (Juan Formell Cortina, b. 1942)
found: Wikipedia, Dec. 14, 2012(under Juan Formell: born Aug. 2, 1942; Cuban salsa musician, bassist, composer, arranger, director of Los Van Van) (under Timba: Formell formed Los Van Van, major timba band)
found: New York times (online), viewed May 5, 2014(in obituary published May 2: Juan Formell; Juan Climaco Formell Cortina; b. Aug. 2, 1942, Havana; d. Thursday [May 1, 2014], aged 71; lived in Havana; Cuban composer, arranger, and bass player who founded the group Los Van Van and made it into one of the world's greatest dance bands)