%0 Journal Article %T Entropy approach in the estimation of parameters of cardio schoolboys at latitudinal %A Yastrebov, A.. %A Gorbunov, D.. %A Elman, K.. %A Gimadiev, B.. %K heart rate, order parameter, self-organization, complexity, chaos. %J Complexity. Mind. Postnonclassic %D 2015 %N 4 %P 8 %I INFRA-M Academic Publishing LLC.