Deborah Kurata on Twitter: "Turned in M9 of "Angular Routing" for @pluralsight. It's on secondary routes with named router outlets (in green). #Angular https://t.co/Y854GSO1M0" / Twitter
The Three Pillars of the Angular Router — Router States and URL Matching - Angular inDepth
Angular - Add navigation with routing
angular 5 multiple router-outlets on a nested page - Stack Overflow
Solved - Angular router outlet appended the view instead of replacing it