Charles U. Martel Glen Nuckolls Premkumar T. Devanbu Michael Gertz April Kwong Stuart G. Stubblebine A General Model for Authenticated Data Structures. 21-41 2004 39 Algorithmica 1 http://dx.doi.org/10.1007/s00453-003-1076-8 db/journals/algorithmica/algorithmica39.html#MartelNDGKS04