1. 8 things to know about palm oil. WWF Report 2018.
https://www.wwf.org.uk/updates/8-things-know-about-palm-oil (accessed online on 21 Dec 2020)
2. Abdullah MIHC, Abdollah MFB, Amiruddin H, Nuri NRM, Tamaldin N, Hassan M, Rafeq SA (2014a) Effect of hBN/Al2O3 nanoparticles on engine oil properties. Energ Educ Sci Technol A Energy Sci Res 32(5):3261–3268
3. Abdullah MIHC, Abdollah MFB, Amiruddin H, Tamaldin N, Nuri NM (2014b) Effect of hBN/Al2O3 nanoparticle additives on the tribological performance of engine oil. J Teknol 66(3):1–6
4. Abdullah MIHC, Abdollah MFB, Amiruddin H, Tamaldin N, Nuri NRM (2016) The potential of hBN nanoparticles as friction modifier and antiwear additive in engine oil. Mech Ind 17(1):104
5. Amiruddin H, Abdollah MFB, Idris AM, Abdullah MIHC, Tamaldin N (2015) Stability of nano-oil by pH control in stationary conditions. Proc Mech Eng Res Day 2015:55–56