İŞCAN, Murat, et al. “On 4-Dimensional Almost Para-Complex Pure-Walker Manifolds”. Turkish Journal of Mathematics, vol. 38, 2014, pp. 1071-80, https://doi.org/10.3906/mat-1311-24.
İŞCAN, M., SARSILMAZ, H., & TURANLI, S. (2014). On 4-dimensional almost para-complex pure-Walker manifolds. Turkish Journal of Mathematics, 38, 1071-1080. https://doi.org/10.3906/mat-1311-24
İŞCAN M, SARSILMAZ H, TURANLI S. On 4-dimensional almost para-complex pure-Walker manifolds. Turkish Journal of Mathematics. 2014;38:1071-80.