Jack, I. R., and K. O. Orubite. “Synthesis of Trans-3,4-Dibenzyl-2-Oxo-Tetrahydrofuran: Advanced Study”. Theory and Applications of Chemistry Vol. 4, Mar. 2020, pp. 64-68, https://stm1.bookpi.org/index.php/tac-v4/article/view/1099.