B. Yao and F. Li. Modeling Mutual Context of Object and Human Pose in Human-Object Interaction Activities, CVPR, 2010.
And additionally:
Z. Tu Auto-context and Its Application to High-level Vision Tasks, CVPR, 2008.
D. Hoiem, A.A. Efros, and M. Hebert, Putting Objects in Perspective, IJCV 2008.