@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040327,
 author = {Asai, Keisui},
 issue = {1},
 journal = {Journal of mathematical sciences, the University of Tokyo},
 month = {},
 note = {application/pdf},
 pages = {1--13},
 title = {The Heat Flows of Harmonic Maps from $S^2$ to $S^2$},
 volume = {3},
 year = {1996}
}