Supryanto, R and Simanjuntak, Wasinton and Pandiangan, Kamisah Delilawati and Situmeang, Rudy T.M and Ahmadhani, Muhammad Yusri (2018) Chemical Composition of Liquid Fuel Produced by Co-pyrolysis of Sugarcane Bagasse and Sludge Palm Oil Using Zeolite-Y as Catalyst. Oriental Journal of Chemistry, 34 (3). pp. 1533-1540. ISSN 0970-020 X

Situmeang, Rudy and Supryanto, R and Kahar, Lolita N. Albert and Simanjuntak, Wasinton and Sembiring, Simon (2017) Characteristics of Nano-Size LaCrO3 Prepared Through Sol-gel Route Using Pectin as Emulsifying Agent. Oriental Journal of Chemistry, 33 (4). pp. 1705-1713. ISSN 0970-020 X

Situmeang, Rudy T.M and wibowo, sukma and Simanjuntak, Wasinton and Supryanto, R and Amalia, Rizki and Septanto, Mitra and Manurung, Posman and Sembiring, Simon (2015) Characteristics of Nanosize Spinel NixFe3-XO4 Prepared By Sol-Gel Method Using Egg White As Emulsifying Agent. Indonesian Journal of Chemistry, 15 (2). pp. 116-122. ISSN 1411 9420