1. Batjes NH (1999) Management options for reducing CO2-concentrations in the atmosphere by increasing carbon sequestration in the soil. Report 410-200-031, Dutch National Research Programme on Global Air Pollution and Climate Change and Technical Paper 30, International Soil Reference and Information Centre, Wageningen
2. Bhattacharyya T, Pal DK, Chandran P, Mandal C, Ray SK, Gupta RK, Gajbhiye KS (2004) Managing soil carbon stocks in the Indo-Gangetic plains, India. Rice-Wheat Consortium for the Indo-Gangetic Plains, New Delhi
3. Biondini ME, Patton BD, Nyren PE (1998) Grazing intensity and ecosystem processes in a northern mixed-grass prairie, USA. Ecol Appl 8:469–479
4. Bremer DJ, Ham JM, Owensby CE, Knapp AK (1998) Response of soil respiration to clipping and grazing in a tallgrass prairie. J Environ Qual 27:1539–1548
5. Briske DD, Richards JH (1995) Plant responses to defoliation: a physiological, morphological and demographic evaluation. In: Bedunah DJ, Sosebee RE (eds) Wildland plants: physiological ecology and developmental morphology. Society for Range Management, Denver, pp 635–710