Image Optimization
Addy Osmani
Efficient Algorithms for Sorting and Synchronization (rsync)
Andrew Tridgell
Redux Quick Start Guide
James Lee & Tao Wei & Suresh Kumar Mukhiya
Software Architecture Metrics
Neal Ford & Eoin Woods & Christian Ciceri & Dave Farley & Andrew Harmel-Law & Michael Keeling & Carola Lilienthal & João Rosa & Alexander von Zitzewitz & Rene Weiß
Learning Scala
Jason Swartz
Programming Scala
Dean Wampler & Alex Payne
Scala Cookbook
Alvin Alexander
Testing in Scala
Daniel Hinojosa