This site gives details of The Ambisonics Association and its work. The Association was created in April 2008, with the general aim of promoting ambisonics. Its initial work is concentrated in the (fairly technical) areas of the creation and promotion of collective marks ('trademarks'), standards (e.g. for file formats) and other necessary infrastructure for ambisonics.
Annotated link http://www.diigo.com/bookmark/http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=PMARCW000006000001015002000001&idtype=cvips
R. Ramamoorthi, и P. Hanrahan. Proceedings of the 28th Annual Conference on Computer Graphics and Interactive Techniques, стр. 497--500. New York, NY, USA, ACM, (2001)