1. The influence of the weather on field tractability in Alberta;Rutledge;Can. Agric.,1968
2. Weather and economics determine corn production machinery systems;Frisby,1966
3. Stochastic models in hydrology;Wiser,1965
4. A simulated environmental model of temperature, rainfall, evaporation and soil moisture;Jones,1970
5. A simplex method for function minimization;Nelder;Comput. J.,1965