@article{oai:kitami-it.repo.nii.ac.jp:00006591,
 author = {Yasuhiko, YABU and Shigeo, KATO},
 issue = {2},
 journal = {北見工業大学研究報告},
 month = {Mar},
 note = {application/pdf, The existence of solutions of the Cauchy problem x^′=f(t, x), x(0)=x_0∈E in a Banach space E are studied. We give a sufficient condition for the above equation to have a unique solution, and prove that the successive approximations of the above equation converge weakly to the unique solution},
 pages = {213--217},
 title = {Some Remarks on the Existence of Solutions of Nonlinear Ordinary Differential Equations in Banach Spaces},
 volume = {17},
 year = {1986}
}