Gajewska T, Kaszuba A, Czuba H, Górecka E. Determination of hydroxyl groups in acetone environment as a result of the reaction with pyromellitic dianhydride, catalysed with 1-methylimidazole. p [Internet]. 2022 Sep. 1 [cited 2024 Nov. 21];49(2):128-31. Available from: https://ichp.vot.pl/index.php/p/article/view/1734