Yasir Sulaeman Kuweir, a. (2010). Pembuatan pelumas bio berbasis minyak kelapa sawit melalui reaksi pembukaan cincin efame (Epoxidized Fatty Acid Methyl Esther) menggunakan resin penukar kation amberlyst-15 = synthesis of palm oil based biolubricant through ring opening reaction of efame (Epoxidized Fatty Acid methyl Esther) using cation exchange resin amberlyst-15.

Yasir Sulaeman Kuweir, author. Pembuatan Pelumas Bio Berbasis Minyak Kelapa Sawit Melalui Reaksi Pembukaan Cincin Efame (Epoxidized Fatty Acid Methyl Esther) Menggunakan Resin Penukar Kation Amberlyst-15 = Synthesis of Palm Oil Based Biolubricant Through Ring Opening Reaction of Efame (Epoxidized Fatty Acid Methyl Esther) Using Cation Exchange Resin Amberlyst-15. 2010.

Yasir Sulaeman Kuweir, author. Pembuatan Pelumas Bio Berbasis Minyak Kelapa Sawit Melalui Reaksi Pembukaan Cincin Efame (Epoxidized Fatty Acid Methyl Esther) Menggunakan Resin Penukar Kation Amberlyst-15 = Synthesis of Palm Oil Based Biolubricant Through Ring Opening Reaction of Efame (Epoxidized Fatty Acid Methyl Esther) Using Cation Exchange Resin Amberlyst-15. 2010.