APA (7th ed.) Citation

Castro, F., Gago, J., Hartillo, I., Puerto, J., & Ucha, J. (2011). An algebraic approach to integer portfolio problems. European journal of operational research, 210(3), 647-659. https://doi.org/10.1016/j.ejor.2010.11.007

Chicago Style (17th ed.) Citation

Castro, F., J. Gago, I. Hartillo, J. Puerto, and J.M Ucha. "An Algebraic Approach to Integer Portfolio Problems." European Journal of Operational Research 210, no. 3 (2011): 647-659. https://doi.org/10.1016/j.ejor.2010.11.007.

MLA (9th ed.) Citation

Castro, F., et al. "An Algebraic Approach to Integer Portfolio Problems." European Journal of Operational Research, vol. 210, no. 3, 2011, pp. 647-659, https://doi.org/10.1016/j.ejor.2010.11.007.