"This is a practical book about how to measure the user experience of websites, software, mobile apps, products, or just anything people use. This book is for UX researchers, designers, product owners, or anyone that has a vested interest in improving experience of websites and products"--Introduction.
UX Methods: A Quick Guide to User Experience Research Methods
A Theoretical Framework for Ecological Interface Design
The book will help you take a more strategic view of product design so you can focus on what really matters: the user's experience.
On the separation of user interface concerns: A Programmer's Perspective on the Modularisation of User Interface Code