Di, Unity, OWIN

https://docs.microsoft.com/ru-ru/aspnet/web-api/overview/advanced/dependency-injection

https://www.accusoft.com/resources/blog/dependency-injection-going-start-finish-unity-c/

https://www.tutorialsteacher.com/ioc/constructor-injection-using-unity-container

https://jakeydocs.readthedocs.io/en/latest/mvc/controllers/dependency-injection.html

https://www.youtube.com/watch?v=tlQ3SbrZdgw

https://www.tutorialsteacher.com/ioc/register-and-resolve-in-unity-container

OWIN

https://stackoverflow.com/questions/34936675/unity-webapi-make-sure-that-the-controller-has-a-parameterless-public-construc/34991456

https://stackoverflow.com/questions/34930678/injecting-dependency-into-web-api-controller/34945118#34945118

http://codeclimber.net.nz/archive/2015/02/20/using-entity-framework-within-an-owin-hosted-web-api-with/

https://stackoverflow.com/questions/19781970/how-to-use-di-container-when-owinstartup

https://damienbod.com/2013/10/01/self-host-webapi-with-owin-and-unity/

Unity

https://www.youtube.com/watch?v=tlQ3SbrZdgw&t=307s