Ţigan, Ştefan. “On Some Procedures for Solving Fractional Max-Min Problems”.
Anal. Numér. Théor. Approx.
, vol. 17, no. 1, Feb. 1988, pp. 73-91,
https://ictp.acad.ro/jnaat/journal/article/view/1988-vol17-no1-art11
.