中国科学院数学与系统科学研究院期刊网
AMS
Nonexistence of the Quasi-harmonic Spheres and Harmonic Spheres into Certain Manifold
Yao Ting GUI
Acta Mathematica Sinica . 2022, (7): 1271 -1276 .  DOI: 10.1007/s10114-022-1280-6