Tirla, C., Smith, R. B., Dooling, T., Kingsbury, N., McKee, C., Panter, R. and Allen, A. V. (2017) “A Study of Alternative Catalysts and Analysis Methods for Biodiesel Production”, European Scientific Journal, ESJ, 13(10). doi: 10.19044/esj.2017.v13n10p%p.