Reinforcement Learning and Shaping: Encouraging Intended Behaviors. - Adam Laud; Gerald DeJong (ICML, 2002)

The Influence of Reward on the Speed of Reinforcement Learning: An Analysis of Shaping. - Adam Laud; Gerald DeJong (ICML, 2003)

Theory and Application of Reward Shaping in Reinforcement Learning - Adam Laud (2004)