Management 21C was published in 2000 with contributions from Peter Senge, C K Prahalad, James Kouzes, Barry Z. Posner, Sumantra Ghoshall, Christopher A. Bartlett, and Rosabeth Moss Kanter.
With C.K.Prahalad, Prof. Hart also wrote the groundbreaking 2002 article "The Fortune at the Bottom of the Pyramid".