APA (7th ed.) Citation

Andrei, N. (2007). A scaled BFGS preconditioned conjugate gradient algorithm for unconstrained optimization. Applied mathematics letters, 20(6), 645-650. https://doi.org/10.1016/j.aml.2006.06.015

Chicago Style (17th ed.) Citation

Andrei, Neculai. "A Scaled BFGS Preconditioned Conjugate Gradient Algorithm for Unconstrained Optimization." Applied Mathematics Letters 20, no. 6 (2007): 645-650. https://doi.org/10.1016/j.aml.2006.06.015.

MLA (9th ed.) Citation

Andrei, Neculai. "A Scaled BFGS Preconditioned Conjugate Gradient Algorithm for Unconstrained Optimization." Applied Mathematics Letters, vol. 20, no. 6, 2007, pp. 645-650, https://doi.org/10.1016/j.aml.2006.06.015.