Preface to the "Art Westerberg" Festschrift. - Andy Hrymak; George Stephanopoulos (Comput. Chem. Eng., 2004)

Discrete element simulation of liquid-particle flows. - K. Apostolou; Andy Hrymak (Comput. Chem. Eng., 2008)

Editorial note. - Rafiqul Gani; Andy Hrymak; Jay H. Lee; Venkat Venkatasubramanian (Comput. Chem. Eng., 2009)