Hello. 
I`ve got an expierence with theese guys https://trigonometricmonographa.jts-blog.com/12135960/2021???-????????
https://geometricalcritiquee.dsiblogger.com/40609119/??-??-??-??
http://arithmetical-discussiona.blog4youth.com/12962773/2021???-????????
  that were mentioned before. 
And I watned to translate thanks!