1. Porulekar SJ, Lim HC (1985) Modelling, optimization and control of semi-batch bioreactors. In: Fiechter A (ed) Advances in Biochemical Engineering, vol 32. Springer, Berlin Heidelberg New York, p 207
2. Modak JM, Lim HC. Tayeb YJ (1986) Biotechnol Bioeng 28: 1396
3. Lim HC, Tayeb YJ, Modak JM, Bonte P (1986) Biotechnol Bioeng 28: 1408
4. Yamane T, Shimizu S (1984) Fed-batch techniques in microbial processes. In: Fiechter A (ed) Advances in Biochemical Engineering, vol 30. Springer, Berlin Heidelberg New York p 145
5. Pontryagin LS, Boltyanskii VG, Gamkrelidze RV, Mischenko EF (1962) The mathematical theory of optimal processes (English translation by Trirogoff KN) Wiley-Interscience, New York