Nguyen S.T., Huynh H.K.P., Le N.T., Nguyen P.T., Truong M.N., Le D.K., Thai Q.B., Tran T.D., Ho D.K., Cao O.T.H., Nguyen M.T.X., 2020, Effects of Phenyltrimethoxysilane and Polyvinyl Alcohol on the Properties of Methyltrimethoxysilane-based Silica Aerogels, Chemical Engineering Transactions, 78, 313-318.