List of Articles underinvestment Open Access Article Abstract Page Full-Text 1 - The impact of Value Added Tax (VAT) on Investment efficiency of Companies Listed in Tehran Stock Exchange Farzaneh Hajihassani Taha Parkhondeh Donya Jeddi Open Access Article Abstract Page Full-Text 2 - Evaluating theInvestment Efficiency on internal quality and Managerial Overconfidence Omid mehri namakavarani hosein kazemi mahdi beshkooh atena mehri namakavarani