Tuukka K. Haapasalo Ibrahim Jaluta Bernhard Seeger Seppo Sippu Eljas Soisalon-Soininen Transactions on the multiversion B<sup>+</sup>-tree. 1064-1075 2009 EDBT http://doi.acm.org/10.1145/1516360.1516482 conf/edbt/2009 db/conf/edbt/edbt2009.html#HaapasaloJSSS09