Wu, Jinn-FwuJinn-FwuWuHsh, Jia-ShengJia-ShengHsh馮蟻剛郭德盛Fong, I-KongI-KongFongKuo, Te-SonTe-SonKuo2009-02-042018-07-062009-02-042018-07-061992http://ntur.lib.ntu.edu.tw//handle/246246/120974en-USThe Optimal Pi-Coefficients of Secend-Order Systemsjournal article