@article{CRMATH_2013__351_21-22_817_0,
     author = {Ma, Li},
     title = {Remarks on compact shrinking {Ricci} solitons of dimension four},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {817--823},
     publisher = {Elsevier},
     volume = {351},
     number = {21-22},
     year = {2013},
     doi = {10.1016/j.crma.2013.10.006},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.crma.2013.10.006/}
}