List of Articles Reciprocal contract Open Access Article Abstract Page Full-Text 1 - Performance of the Rule of Guarantee of Exchange, in Termination of Contracts of Exchange Mahdi Khademsarbakhsh Open Access Article Abstract Page Full-Text 2 - Considerations on Knowing the Nature of Contracts with a Comparative Approach towards Sale Mehdi Mohaghegh far Open Access Article Abstract Page Full-Text 3 - Judicial -Legal Analysis of Possibility to Generalize Civil Arsh (Price-Reduction) to all Other Options Aliakbar Izadifard Mehdi Falah Mehdi Falah