@inbook{inbookb4c80385,
title   = {Preparation, characterization and some catalytic properties of different smectites pillared with hydroxy aluminum and hydroxy-gallium solutions. Preliminary study},
author = {Vieira Coelho, A. C. and Poncelet, Georges},
year = {1990},
publisher = {Elsevier},
journal   = {Pillared Layred Structures}
}