Nihaya Alivia Coraima Dewi, F. . Resmi, and P. T. B. Ngastiti. “Optimization of Balanced Menu for Pregnant Women in Grobogan-Central Java Using Simplex Method”. Jurnal Matematika MANTIK, vol. 7, no. 1, May 2021, pp. 59-66, doi:10.15642/mantik.2021.7.1.59-66.