パガニーニ国際コンクール
A back condition caused his withdrawal from the concert platform in the early 1960s when still aged only 40. He continued to teach and play chamber music, and served on various competition juries such as the 1957 Henryk Wieniawski Competition in Poznan; the 1957 and 1959 Marguerite Long-Jacques Thibaud Competition in Paris, the 1960 Paganini Competition in Genoa and the 1963 Queen Elisabeth Competition in Brussels.