Where can I find the algorithm for calculating PARS (Indicator of the Activity of Regulatory Systems according to the Bayevsky method)?

Question

Algorithms

I can not find the algorithm for calculating PARS (Indicator of the Activity of Regulatory Systems according to the Bayevsky method), which is used in the analysis of heart rate variability. Everywhere only general words. But I need to know how the score is set according to the proposed scale in accordance with the calculated HRV parameters.