Chapter five: Craven, B. D. (1988). Fractional programming. Sigma Series in Applied Mathematics. Vol. 4. Berlin: Heldermann Verlag. p. 145. ISBN3-88538-404-3. MR0949209.
Mangasarian 1965 Mangasarian, O. L. (January 1965). "Pseudo-Convex Functions". Journal of the Society for Industrial and Applied Mathematics, Series A. 3 (2): 281–290. doi:10.1137/0303020. ISSN0363-0129..
Mangasarian 1965 Mangasarian, O. L. (January 1965). "Pseudo-Convex Functions". Journal of the Society for Industrial and Applied Mathematics, Series A. 3 (2): 281–290. doi:10.1137/0303020. ISSN0363-0129..
Mangasarian 1965 Mangasarian, O. L. (January 1965). "Pseudo-Convex Functions". Journal of the Society for Industrial and Applied Mathematics, Series A. 3 (2): 281–290. doi:10.1137/0303020. ISSN0363-0129..
Mangasarian 1965 Mangasarian, O. L. (January 1965). "Pseudo-Convex Functions". Journal of the Society for Industrial and Applied Mathematics, Series A. 3 (2): 281–290. doi:10.1137/0303020. ISSN0363-0129..