中国科学院数学与系统科学研究院期刊网
The Rota-Baxter Algebra Structures on Sweedler's 4-dimensional Hopf Algebra
Feng Xia GAO, Shi LinYANG
Acta Mathematica Sinica, Chinese Series . 2019, (1): 71 -86 .  DOI: 10.12386/A2019sxxb0007