An investigation of effort distribution among development phases: A four-stage progressive software cost estimation model

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@article{Papatheocharous2017AnIO, title={An investigation of effort distribution among development phases: A four-stage progressive software cost estimation model}, author={Efi Papatheocharous and Stamatia Bibi and Ioannis Stamelos and Andreas S. Andreou}, journal={Journal of Software: Evolution and Process}, year={2017}, volume={29} }