Preparation and in vitro properties of S(+)-ibuprofen/urea-montmorillonite
LI Tingting, ZHAO Lele, ZHENG Ziliang, WANG Zhenjun, ZHANG Ruiping
CIESC Journal . 2017, (9): 3631 -3637 .  DOI: 10.11949/j.issn.0438-1157.20170424