Highly selective PVC-membrane electrode based on N,N' bis(salicylidene)ethylenediaminocobalt(II) hydrate for determination of CrO₄²⁻ - Kassim, Anuar; Rezayi, Majid; Tan, Wee Tee; Yusof, Nor Azah; Lee, Yook Heng; Ahmadzadeh, Saeid (Faculty of Science, Universiti Putra Malaysia, 2009)