Nigam, S N and Nageswara Rao, R C and Wright, G C (2002) Field Screening for Drought Tolerance in Groundnut. In: Field Screening for Drought Tolerance Proceedings of an International Workshop on. International Crops Research Institute for the Semi-Arid Tropics , Patancheru, Andhra Pradesh, India, pp. 147-151. ISBN 92-9066-448-7.