@TechReport{SeSw04-BHAMTR-sm-tree,
author = {Alan P. Sexton and Richard Swinbank},
institution = {University of Birmingham, UK},
year = {2004},
number = {CSR-04-2},
title = {Symmetric {M}-Tree},
pdf = {http://www.cs.bham.ac.uk/%7Eaps/research/papers/pdf/SeSw-TRCSR-04-2-SymmetricMTree.pdf},
}