Function points in the estimation and evaluation of the software process
Graham Cedric Low, D. Ross Jeffery · IEEE Transactions on Software Engineering · 1990
The authors report the results of an empirical research project on the consistency and limitations of the number of function points as an a priori measure of system size rather than the traditional lines-of-code measure. They conclude that function points are a more consistent a priori measure of system size. The results also indicate that the function-point estimate of size is lower for analysts experienced both in software development and in function-point estimation.>