@article{oai:ynu.repo.nii.ac.jp:00006971,
 author = {Otsuki, Tominosuke},
 issue = {1},
 journal = {Yokohama Mathematical Journal = 横濱市立大學紀要. D部門, 数学},
 month = {},
 note = {application/pdf, We studied the Kiling fields of a spacetime with pseudo Metric: ds^{2}=frac{1}{x_{4}x_{4}}{sum_{b,c=1}^{3}(delta_{bc}-frac{ax_{b}x_{C}}{1+ar^{2}})dx_{b}dx_{C}-frac{1}{1+ax_{4}x_{4}}dx_{4}dx_{4}} , on R^{4}+=R^{3}times R+ , where r^{2}=sum_{b=1}^{3}x_{a}x_{b}, a=constant>0 in [13]. In this paper, we shall investigate the analogous problems for the case a<0, for which the above metric has singularity where 1+ar^{2}=0 or 1+ax_{4}x_{4}=0.},
 pages = {47--77},
 title = {KILLING VECTOR FIELDS OF A 4-SPACE ON R_{+}^{4}},
 volume = {49},
 year = {2001}
}