Ismiyati..; SuryaniA.; MangunwidjayaD.; Machfud..; HambaliE. Production Of Sodium Lignosulphonate From Isolated Lignin Of Empty Fruit Bunch : Indentification And Performance Test As A Dispersant Agent. Jurnal Teknologi Industri Pertanian, v. 19, n. 1, 19 May 2010.