P. G. Jönsson, Å ;. Kvick: Precision neutron diffraction structure determination of protein and nucleic acid components. III. The crystal and molecular structure of the amino acid α-glycine. Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 15.6.1972, 28. vsk, nro 6, s. 1827–1833. doi:10.1107/s0567740872005096ISSN 0567-7408Artikkelin verkkoversio.
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P. G. Jönsson, Å ;. Kvick: Precision neutron diffraction structure determination of protein and nucleic acid components. III. The crystal and molecular structure of the amino acid α-glycine. Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 15.6.1972, 28. vsk, nro 6, s. 1827–1833. doi:10.1107/s0567740872005096ISSN 0567-7408Artikkelin verkkoversio.
Eni Generalic, Faculty of Chemistry and Technology, Split, Croatia: Zwitterionglossary.periodni.com. Arkistoitu 6.7.2017. Viitattu 14.3.2018.
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P. G. Jönsson, Å ;. Kvick: Precision neutron diffraction structure determination of protein and nucleic acid components. III. The crystal and molecular structure of the amino acid α-glycine. Acta Crystallographica Section B Structural Crystallography and Crystal Chemistry, 15.6.1972, 28. vsk, nro 6, s. 1827–1833. doi:10.1107/s0567740872005096ISSN 0567-7408Artikkelin verkkoversio.