Yap Wai Weng, Tamat Sarmidi, Abu Hassan Shari Mohd Nor dan Fathin Faezah Said.  (2017).  Shadow Economy in Malaysia: A State Level Analysis.  - Pertanika Journal of Social Sciences & Humanities.  1365-1382. 

Najla Shafighi and Abu Hassan Shaari, Behrooz Gharleghi, Tamat Sarmidi and Khairuddin Omar.  (2016).  Financial integration via panel cointegration approaches in ASEAN+5.  - JOURNAL OF ECONOMIC STUDIES.  2-15. 

Behrooz Gharleghi, Abu Hassan Shaari Md Nor, Tamat Sarmidi.  (2014).  Application of The Threshold Model For Modelling and Forecasting of Exchange Rate in Selected ASEAN Countries.  - Sains Malaysiana.  1609-1622. 

Salleh N.H.M., R. Othman, T. Sarmidi, A. H. Jaafar, B.M.N. Norghani.  (2012).  Tourist Satisfaction of the Environmental Service Quality for Tioman Island Marine Park.  - Indian Journal of Geo-Marine Sciences.  41(2):173-179.