“…In 1994, Pelageya Kochina delivered the opening address at an international conference on complex analysis and free boundary layer problems, which was held in St. Petersburg on the occasion of her 95th birthday. Her last article was published jointly with her daughter, mathematician Nina Kochina, when she was 100 years old (Kochina and Kochina 1999). Pelageya Kochina died quietly on July 3, 1999.…”