1. Handbook of mathematical functions;Abramowitz,1964
2. Woody plant encroachment into southwestern grasslands and savannas: rates, patterns, and proximate causes;Archer,1994
3. Autogenic succession in a subtropical savanna: conversion of grassland to thorn woodland;Archer;Ecol. Monogr.,1988
4. Plant productivity and environment;Boyer;Science,1982
5. Physiological responses to moderate water stress;Bradford,1982