@article { f-i-chaliapin-and-k-p-pyatnitsky-the-history-of-their-friendship,
	title = {F.I. Chaliapin and K.P. Pyatnitsky: The History of Their Friendship},
	journal = {Literay Fact},
	pages = {71-86},
	year = {2023},
	volume = {1},
	number = {30},
	doi = {10.22455/2541-8297-2023-30-71-86},
	author = {Propolyanis, E., Galina}
}