Endres, AlbertRombach, Dieter2019-01-092024-06-282019-01-092024-06-2820030 321 15420 7https://drs.ess.gov.et/handle/123456789/34262enEmpirical Observations, Laws and TheoriesA Handbook of Software and Systems EngineeringEmpirical Observations, Laws and TheoriesBook