@article{paperid:1018327, author = {Ahmad Banihashemi and Akhlaghinia, Batool}, title = {New heat stable polyethers, polyketones and polysulfones}, journal = {Macromolecular Chemistry and Physics}, year = {1999}, volume = {200}, number = {10}, month = {January}, issn = {1022-1352}, pages = {2284--2293}, numpages = {9}, keywords = {polyethers; polyketones ;polysulfones;Benzofuro[2;3-b]benzofuran-2;9-dicarboxylic acid ;heat stable}, }