Input (grade 13): She participated in a Pablo Casals masterclass in Zermatt, Switzerland in 1960, and undertook short-term studies with Paul Tortelier in Paris in 1962 and Mstislav Rostropovich in Russia in 1966.
Output (grade 11): She took part in a masterclass with Pablo Casals in Zermatt, Switzerland in 1960, and had some lessons with Paul Tortelier in Paris in 1962, and with Mstislav Rostropovich in Russia in 1966.