APA (7th ed.) Citation

Atapour, M., Norouzian, S., Sheikholeslami, S., & Volkmann, L. (2017). Twin signed domination numbers in directed graphs. Algebra and Discrete Mathematics.

Chicago Style (17th ed.) Citation

Atapour, M., S. Norouzian, S.M Sheikholeslami, and L. Volkmann. "Twin Signed Domination Numbers in Directed Graphs." Algebra and Discrete Mathematics 2017.

MLA (8th ed.) Citation

Atapour, M., et al. "Twin Signed Domination Numbers in Directed Graphs." Algebra and Discrete Mathematics, 2017.

Warning: These citations may not always be 100% accurate.