Felycia, E.S., Suryadi, I. and Yi-Hsu, J. 2016. Conversion of water hyacinth Eichhornia crassipes into biofuel intermediate: combination subcritical water and zeolite based catalyst processes. CTU Journal of Innovation and Sustainable Development . Renewable Energy (Jul. 2016), 64-69. DOI:https://doi.org/10.22144/ctu.jsi.2016.010.