Ionac, Doina, and Ştefan Ţigan. “Some Procedures for Solving Special Max-Min Fractional Rank-Two Reverse-Convex Programming Problems”. Rev. Anal. Numér. Théor. Approx., vol. 33, no. 2, Aug. 2004, pp. 167-74, https://doi.org/10.33993/jnaat332-772.