She has worked with Viola since 1978 managing and assisting Viola with his videotapes and installations .
Bill Viola Studio is run by his wife , Kira Perov , who is the executive director .
Kira Perov has worked with Viola since 1978 managing and assisting Viola with his videotapes and installations .
Bill Viola Studio is run by his wife , Kira Perov , who is the executive director .