Alf Olav Larsen, Fred Steinar Nordrum, Nicola Döbelin, Thomas Armbruster, Ole V. Petersen, Muriel Erambert: Heulandite-Ba, a new zeolite species from Norway. In: European Journal of Mineralogy. Band17, 2005, S.143–153, doi:10.1127/0935-1221/2005/0017-0143 (unibe.ch [PDF; 873kB]).
handbookofmineralogy.org
Heulandite. In: John W. Anthony, Richard A. Bideaux, Kenneth W. Bladh, Monte C. Nichols (Hrsg.): Handbook of Mineralogy, Mineralogical Society of America. 2001 (handbookofmineralogy.org [PDF; 81kB; abgerufen am 15. April 2018]).
Alf Olav Larsen, Fred Steinar Nordrum, Nicola Döbelin, Thomas Armbruster, Ole V. Petersen, Muriel Erambert: Heulandite-Ba, a new zeolite species from Norway. In: European Journal of Mineralogy. Band17, 2005, S.143–153, doi:10.1127/0935-1221/2005/0017-0143 (unibe.ch [PDF; 873kB]).