Hilmiyati, Hilmiyati, 		Husraini, Laisa, AND 		Zamhuri, Ahmad.
" Densification of Product Torrefaction from Coconut Coir to  Bio-briquette as Renewable Energy that Environmentally" <em>International Journal of Environmental Research &amp; Clean Energy</em> [Online], Volume 12 Number 1 (5 November 2018)