@article{oai:omu.repo.nii.ac.jp:00008649, author = {Jyo, Yoichi and Minamoto, Suemitsu}, issue = {1}, journal = {Bulletin of University of Osaka Prefecture. Series A, Engineering and natural sciences}, month = {Oct}, note = {application/pdf, Bulletin of University of Osaka Prefecture. Series A, Engineering and natural sciences. 1980, 29(1), p.21-31}, pages = {21--31}, title = {Hessian Matrix for the Networks Containing Periodically operated Switches}, volume = {29}, year = {1980} }