Schittkowski, K. (1980). Nonlinear programming codes: Information, tests, performance. Springer-Verlag.
Cita Chicago (17th ed.)Schittkowski, Klaus. Nonlinear Programming Codes: Information, Tests, Performance. Berlín: Springer-Verlag, 1980.
Cita MLA (9th ed.)Schittkowski, Klaus. Nonlinear Programming Codes: Information, Tests, Performance. Springer-Verlag, 1980.
Atenció: Aquestes cites poden no estar 100% correctes.