Ali Umar, A., Abd Rahman, M. Y., Taslim, R., Mat Salleh, M., & Oyama, M. (2011). A simple route to vertical array of quasi-1D ZnO nanofilms on FTO surfaces: 1D-crystal growth of nanoseeds under ammonia-assisted hydrolysis process. Springer.

Ali Umar, Akrajas, Mohd Yusri Abd Rahman, Rika Taslim, Muhamad Mat Salleh, and Munetaka Oyama. A Simple Route to Vertical Array of Quasi-1D ZnO Nanofilms On FTO Surfaces: 1D-crystal Growth of Nanoseeds Under Ammonia-assisted Hydrolysis Process. Springer, 2011.

Ali Umar, Akrajas, et al. A Simple Route to Vertical Array of Quasi-1D ZnO Nanofilms On FTO Surfaces: 1D-crystal Growth of Nanoseeds Under Ammonia-assisted Hydrolysis Process. Springer, 2011.