Huynh, H., Hoang, T., Nguyen, T., Nguyen, T., Bui, N., On, T., Tran, T. and Lam, L. (2015) “Improving the ammonia sensing of reduced graphene oxide film by using metal nano-materials”, Science and Technology Development Journal, 18(3), pp. 72-77. doi: https://doi.org/10.32508/stdj.v18i3.822.