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Soveršenstvovanie sistemy amortizacii v selʹskom chozjajstve
Prejger, Davyd K., (1985)
The effect of usage and size on tractor depreciation
Perry, Gregory M., (1990)
Farm machinery : use, depreciation, and replacement
Parsons, Merton S., (1960)
Risk Premia in Tractor and Combine Investments
Mumey, Glen, (1996)
Reducing Investment Risk in Tractors and Combines with Improved Terminal Asset Value Forecasts
Unterschultz, James, (1996)