@techreport{R-91-25, TITLE = {Algorithms for the All-Nearest-Neighbors Problem}, AUTHOR = {Per-Olof Fj{\"a}llstr{\"o}m and Jyrki Katajainen and Jan Petersson}, YEAR = {1991}, NUMBER = {R-91-25}, INSTITUTION = ida, ADDRESS = idaaddr, ABSTRACT = {}, IDANR = {LiTH-IDA-R-91-25}, NOTE = {Also in Proc. of Conf. on System Modelling and Optimization, International Federation for Information Processing (IFIP), Zurich, Switzerland, September 2-6, 1991}