Krishna Kumar, K. Kamala, B. Rajagopalan, M. P. Hoerling, J. K. Eischeid, S. K. Patwardhan, G. Srinivasan, B. N. Goswami, and R. Nemani (2011), The once and future pulse of Indian monsoonal climate, Clim. Dyn., 36, 2159-2170, doi:10.1007/s00382-010-0974-0.