Optical data storage 2001 : 22 - 25 April 2001, Santa Fe, USA
Storage Batteries : Including operation, charging, maintenance and repair
Advanced optical data storage : 28 - 29 January 2003, San Jose, California, USA
Optical data storage : 9-14 February 1992, San Jose, California
Optical mass data storage II : 18 - 22 Aug. 1986, San Diego, Calif.