* Why it's choosed for wwwvoip: [https://devel.mephi.ru/dyokunev/wwwvoip-lections/raw/master/2016-05-20_wwwvoip-intro.odp](https://devel.mephi.ru/dyokunev/wwwvoip-lections/raw/master/2016-05-20_wwwvoip-intro.odp) (useless presentation) [ru]
* About composition and interfaces in the end of: [https://devel.mephi.ru/dyokunev/wwwvoip-lections/raw/master/2016-05-27_mvc_rest_golang.odp](https://devel.mephi.ru/dyokunev/wwwvoip-lections/raw/master/2016-05-27_mvc_rest_golang.odp) [ru]