1. Bolton, S., 1990. Optimization in Pharmaceutical Statistics. Marcel Dekker, New York, pp. 421–452.
2. Higuchi, T., Connors, K.A., 1965. Phase solubility techniques. In: Reilley, C.N. (Ed.), Advances in Analytical Chemistry and Instrumentation. Interscience, New York, p. 132.
3. A freeze-dried injectable form of Ibuprofen: development and optimisation using response surface methodology;Kagkadis;PDA J. Pharm. Sci. Technol.,1996
4. Improved delivery through biological membranes. VIII. Design, synthesis and in vivo testing of true prodrugs of Aspirin;Loftsson;J. Pharm. Sci.,1981
5. Solubilization and stabilization of drugs through cyclodextrin complexation;Loftsson;Acta Pharm. Nord.,1991