Beygi Habibabadi,A. , , Pashaei,H. , and Moirmohammadi,M. A. . "Analysis of "condition with the purpose of strengthening transactions" and its comparison with the option of condition without period in Iran's legal and transaction jurisprudence system", Research Letter of Social Jurisprudence (Interdisciplinary Researches in Jurisprudence/ Researches In Jurisprudence), 11, 1, 2023, 147-168. doi: 10.30497/irj.2022.76399