Itoh, Kazuyuki; Matsubayashi, Tetsuo; Nakamura, Eiji; Motegi, Hiroshi (1975). «X-Ray Study of High-Temperature Phase Transitions in KH2PO4». Journal of the Physical Society of Japan39 (3): 843. Bibcode:1975JPSJ...39..843I. doi:10.1143/JPSJ.39.843.
Ono, Yasuhiro; Hikita, Tomoyuki; Ikeda, Takuro (1987). «Phase Transitions in Mixed Crystal System K1−x(NH4)xH2PO4». Journal of the Physical Society of Japan56 (2): 577. Bibcode:1987JPSJ...56..577O. doi:10.1143/JPSJ.56.577.
Itoh, Kazuyuki; Matsubayashi, Tetsuo; Nakamura, Eiji; Motegi, Hiroshi (1975). «X-Ray Study of High-Temperature Phase Transitions in KH2PO4». Journal of the Physical Society of Japan39 (3): 843. Bibcode:1975JPSJ...39..843I. doi:10.1143/JPSJ.39.843.
Ono, Yasuhiro; Hikita, Tomoyuki; Ikeda, Takuro (1987). «Phase Transitions in Mixed Crystal System K1−x(NH4)xH2PO4». Journal of the Physical Society of Japan56 (2): 577. Bibcode:1987JPSJ...56..577O. doi:10.1143/JPSJ.56.577.