@article { author = {}, title = {اخبار انجمن}, journal = {خبرنامه انجمن ریاضی ایران}, volume = {42}, number = {169-170}, pages = {-}, year = {2022}, publisher = {انجمن ریاضی ایران}, issn = {۰۰۰۰-۰۰۰۰}, eissn = {}, doi = {}, abstract = {}, keywords = {}, url = {https://nims.ims.ir/article_152364.html}, eprint = {https://nims.ims.ir/article_152364_d2f3c0c9203f65dab06d341e9fd7a2a7.pdf} }