Bellman R.On the approximation of curves by line segments using dynamic programmingCommunications of the Association of Computing Machinery vol 4 no 6 June 1961
2.
Rubin A.I.Hybrid techniques for generation of arbitrary functionsSIMULATION vol 7 no 6 December 1966
3.
EAI 680 Reference HandbookElectronic Associates Inc Publication no 00 800.2048-1 July 1967