Collision characteristics between two temporal untraslow vector optical solitons in a five-level V type systemY. C. She, D. L. Wang, W. X. Zhang, Z. Q. Zhang and J. W. DingEur. Phys. J. D, 61 1 (2011) 181-186DOI: https://doi.org/10.1140/epjd/e2010-00250-1