APA (7th ed.) Citation

Bastos, N. R. O., Ferreira, R. A. C., & Torres, D. F. M. (2014). Necessary optimality conditions for fractional difference problems of the calculus of variations.

Chicago Style (17th ed.) Citation

Bastos, N. R. O., R. A. C. Ferreira, and D. F. M. Torres. Necessary Optimality Conditions for Fractional Difference Problems of the Calculus of Variations. 2014.

MLA (8th ed.) Citation

Bastos, N. R. O., et al. Necessary Optimality Conditions for Fractional Difference Problems of the Calculus of Variations. 2014.