TY  - JOUR
AU  - S. N. Sazonov
TI  - A method of deriving the Wallis formula and of decomposition of hyperbolic functions into infinite products
JO  - Matematičeskoe obrazovanie
PY  - 2018
SP  - 40
EP  - 43
IS  - 2
UR  - http://geodesic.mathdoc.fr/item/MO_2018_2_a3/
LA  - ru
ID  - MO_2018_2_a3
ER  -