Permutations sortable by two stacks in series.

MLA

Elvey Price, Andrew, and Anthony J. Guttmann. “Permutations Sortable by Two Stacks in Series.” Advances in Applied Mathematics, vol. 83, Feb. 2017, pp. 81–96. EBSCOhost, https://doi.org/10.1016/j.aam.2016.09.003.

APA

Elvey Price, A., & Guttmann, A. J. (2017). Permutations sortable by two stacks in series. Advances in Applied Mathematics, 83, 81–96. https://doi.org/10.1016/j.aam.2016.09.003

Chicago

Elvey Price, Andrew, and Anthony J. Guttmann. 2017. “Permutations Sortable by Two Stacks in Series.” Advances in Applied Mathematics 83 (February): 81–96. doi:10.1016/j.aam.2016.09.003.