Add NgRx interop links

Author: markerikson

docs/rtk-query/usage/usage-without-react-hooks.mdx

@@ -91,3 +91,8 @@ Examples of usage without React hooks can be found under the following:
   allow="geolocation; microphone; camera; midi; vr; accelerometer; gyroscope; payment; ambient-light-sensor; encrypted-media; usb"
   sandbox="allow-modals allow-forms allow-popups allow-scripts allow-same-origin"
 ></iframe>
+
+## Further Information
+
+- NgRx maintainer Brandon Roberts has written a post called [Cousins playing nicely: Experimenting with NgRx Store and RTK Query](https://dev.to/brandontroberts/cousins-playing-nicely-experimenting-with-ngrx-store-and-rtk-query-25f4), which demonstrates some approaches for integrating RTK Query into NgRx
+- [`saulmoro/ngrx-rtk-query`](https://github.com/SaulMoro/ngrx-rtk-query) implements an NgRx equivalent of the subscription lifecycle managed in RTKQ's own React hooks