RXJAVA for Android Developers by Timo Tuominen

Android Security Internals : An in-Depth Guide to Android's Security Paperback

OpenShift for Developers: A - Paperback, by Wood Joshua; Tannous - Very Good

Practical Android: 14 Complete Projects - Paperback, by Wickham Mark - Very Good

RxJava for Android Developers: With ReactiveX and FRP by Timo Tuominen (English)

Professional Android 2 Application - Paperback, by Meier Reto - Very Good

Head First Android Development : A Brain-Friendly Guide Paperback

Hands-On Azure for Developers: - Paperback, by Kamil Mrzygłód - Very Good