The New Grove Dictionary of Music and Musicians, second edition,eited by Stanley Sadie and John Tyrrell.
Shortly after graduating she began to attend the courses music writing and harmony given by Profressor Andre Souris at the Royal Conservatory of Brussels, and as a result was invited to attend the Summer School for New Music in Darmstadt (Darmstädter Ferienkurse), where she met the Belgian musicologist Celestin Deliege, whom she married in 1954.
For example, they performed them in 1973 at the Metz Festival, in 1974 at both the Allgemeinen Deutschen Musikfest in Stuttgart and the Darmstädter Ferienkurse, and in 1978 in Luxembourg.
He attended aesthetics courses by Étienne Souriau at the Sorbonne, the courses of Olivier Messiaen at the Paris conservatory, and appeared at the Darmstadt International Summer Courses for New Music.
She also studied privately with James Avery and Bernhard Wambach and participated in summer courses at Szombathely, Darmstadt and Avignon.
An important figure in the European percussion community for many years, Van Sice gave the first solo marimba recital at Amsterdam's Concertgebouw in 1989 and taught at the Rotterdam Conservatorium and Darmstädter Ferienkurse.