In Memoriam
June 3, 2012, Russell K.H. Ching (1952-2012; age 60)California State University at Sacramento, California, USA
March 8, 2018, Rimantas Gatautis (1974-2018; age 44)Kaunas University of Technology, Lithuania
March 25, 2023, HsiuJu Rebecca Yen (1961-2023; age 62)National Tsing Hua University, Taiwan