@article{oai:niit.repo.nii.ac.jp:00000212,
 author = {竹野, 茂治},
 journal = {新潟工科大学研究紀要},
 month = {Dec},
 note = {For a real valued periodic function  with period p, the function of two\nvariables F((x + y), (x ? y)) has the same period p for x and for y. But\nbasic periods for x and for y may be smaller than p. In this paper, we explain\na conjecture whether these periods may differ, introduce some results about\nit, and some counter-examples in cases of complex valued functions and\ndiscontinuous functions.},
 pages = {13--17},
 title = {2変数の周期関数に関するある性質について},
 volume = {17},
 year = {2012}
}