Wijaya, N. A., Wijayati, N. and Cahyono, E. (2016) “Catalytic Activity of Zr4+/ZA on The Isomerization Reaction of α-Pinene and It’s Reusability Test”, Indonesian Journal of Physics and Nuclear Applications, 1(3), pp. 157–165. doi: 10.24246/ijpna.v1i3.157-165.