@article{oai:repository.dl.itc.u-tokyo.ac.jp:00040999, author = {Okamoto, Hisashi}, journal = {Scientific papers of the College of Arts and Sciences, the University of Tokyo}, month = {}, note = {application/pdf}, pages = {1--43}, title = {O(2)-equivariant Bifurcation Equations of mode (1, 2)}, volume = {39}, year = {1989} }