@article{Helm_1962, title={Notas del extranjero: Otoño en Varsovia, 1961}, volume={16}, url={https://rchdt.uchile.cl/index.php/RMCH/article/view/13871}, number={80}, journal={Revista Musical Chilena}, author={Helm, Everett.}, year={1962}, month={ene.}, pages={p. 81–82} }