Maruşciac, I. “On a Geometric Programming Problem With Linear Constraints”. Anal. Numér. Théor. Approx. 9, no. 2 (August 1, 1980): 209–219. Accessed April 11, 2025. https://ictp.acad.ro/jnaat/journal/article/view/1980-vol9-no2-art6.