List of Articles Pledge Open Access Article Abstract Page Full-Text 1 - Mortgage Commercial Documents in Iranian Law Ramin Pour Saeed Zahra Davoudi Open Access Article Abstract Page Full-Text 2 - Relation Definition between Lottery and Gambling in Iranian law and Islamic Jurisprudence Meysam Nazari Oloum Mohammad Hossein Esfandiarpour Open Access Article Abstract Page Full-Text 3 - survey in the guarantor 's responsibility regards to the compensation of the delayed payment in the case of bankruptcy of the orginal debtor karim noormohamadi Reza Partovizade benam Open Access Article Abstract Page Full-Text 4 - The Effect of Changes of Main Obligations in Subordinated Obligations of the Contract nasrollah jafari pegah sarmadi Open Access Article Abstract Page Full-Text 5 - The role of official documents in invoice-related contracts Maryam Ibn Turab Open Access Article Abstract Page Full-Text 6 - The Liability of the Guarantor Regarding the Damage of Payment Delay in case of Bankruptcy of the Main Obligor karim noormohamadi Reza Partovizade Benam