FÁBRY, J., PETŘÍČEK, V., KROUPA, J., CÍSAŘOVÁ, I. Ferroelastic structures of n-pentyl-, n-hexyl- and n-nonylammonium dihydrogenphosphate crystals. Acta Crystallographica Section B-Structural Science. 2000, 56(-), 906-914. ISSN 0108-7681. E-ISSN 2052-5206.