The official Android docs on app architecture are also very good. I don't think Google uses the term "Clean Architecture" in it, but the ways they describe the Domain layer are effectively the same principles. And while Uncle Bob's descriptions are very good, they do focus more on backend or full stack system designs. But because Google's docs are written for Android, the concepts translate better to mobile or other frontend apps better, and are more immediately applicable.
https://developer.android.com/topic/architecture