He gave a wonderful series of lectures on special functions, asymptotic analysis, and approximation theory. Tragically, however, he died while still in Moscow.
Ibinigay niya ang isang kahanga-hanga serye ng mga lektura sa mga espesyal na pag-andar, asymptotic analysis, at theory approximation. Tragically, gayunpaman, siya namatay habang pa rin sa Moscow.