Ahmed, Z.Bender, C. M.Berry, M. V.2018-12-182018-12-182005Journal of Physics A: Mathematical and General, 2005. Vol. 38: pp. L627-L630http://hdl.handle.net/123456789/174623883 bytestext/htmlenReflectionless potentialsPT symmetryPT-symmetric boundary conditionsdifferential equationsunconventional scalar productArticle