Salman Shafqat1, S.; Ain Khan2, M.; Zulkharnain4, A.; Hamdan1, S.; Ragai Henry Rigit1, A.; Azam Khan1, A. Synthesis of Arylidene Propanedioic Acids by Knoevenagel Condensation for Use in Ceramic Sols. ajc 2014, 26, 8463-8466.