Small oscillations of the pendulum,  Euler’s method, and adequality, 
Quantum Studies: Mathematics and Foundations, 2016, 3, no 3, pp 231–236. 
 DOI: 
10.1007/s40509-016-0074-x 
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| Авторы: Kanovei V., Katz K., Katz M., Nowik T. | 










