Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Schmidt V. Hugo,Comment on “The Role of Hydrogen Bonds in Antiferroelectricity of NH4H2PO4”,Journal of the Physical Society of Japan,00319015,THE PHYSICAL SOCIETY OF JAPAN,1987,56,10,3752-3753,https://cir.nii.ac.jp/crid/1390282679162923904,https://doi.org/10.1143/jpsj.56.3752