@article{kimms_2007,  title={On the amount and timing of project payments with hints to customary contracting in Germany},  volume={14},  ISSN={0104-530X},  url={https://doi.org/10.1590/S0104-530X2007000300002},  DOI={10.1590/S0104-530X2007000300002},  number={3},  journal={Gestão & Produção},  publisher={Universidade Federal de São Carlos},  author={Kimms, Alf},  year={2007},  month={Sep},  pages={441–451} }