@article{10_21136_CMJ_2023_0511_22, author = {Xu, Yongjun and Zhang, Xin}, title = {Symmetries in connected graded algebras and their {PBW-deformations}}, journal = {Czechoslovak Mathematical Journal}, pages = {1255--1272}, publisher = {mathdoc}, volume = {73}, number = {4}, year = {2023}, doi = {10.21136/CMJ.2023.0511-22}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.2023.0511-22/} }