The conceptualization is done by D Slouka, M Pesta and T Kostlivy. R Kucera, M Pesta and J Windrichova worked on the methodology. D Slouka, J Windrichova, H Rezackova, K Houfkova and T Kostlivy done the investigation. D Slouka, J Windrichova, M Pesta and H Rezackova worked on the writing – original draft preparation. O Topolcan, V Cerna and R Kucera worked on the writing – review and editing.