The Atmel AVR Microcontroller: MEGA and XMEGA in Assembly and C (Book Only) (Explore Our New Electronic Tech 1st Editions): Huang, Han-Way: 9781133607281: Amazon.com: Books
Getting started with the AVR microcontroller series :: Cavelab blog — Stories from the Cavelab
C programming: Why Study 8-bit AVR Microcontroller Architecture? | Elektor Magazine