The Institute of Mathematical Statistics Bulletin publishes the complete programs of all IMS meetings, abstracts of all Invited and contributed papers, an International calendar of statistical events, as well as articles and news of Interest to IMS members and to statisticians and probablllsts In general. Views and opinions In editorials and articles are not to be taken as official expressions of the Institute's policy unless so stated; publication does not necessarily Imply endorsement In any way of the opinions expressed therein and The IMS Bulletin and Its publisher do not accept any responsibility for them. The IMS Bulletin is copyrighted and authors of individual articles may be asked to sign a copyright transfer to the IMS before publication.