@article{oai:tsukuba.repo.nii.ac.jp:00015862,
 author = {Unni, K.R. and Puttamadaiah, C.},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {Jun},
 pages = {15--19},
 title = {On orthogonality in S.I.P. spaces},
 volume = {5},
 year = {1981}
}