XML Query Algera for Cost-based Optimization. - Maxim Lukichev; Dmitry Barashev (SYRCoDIS, 2007)

Enabling XPath Optional Axes Cardinality Estimation Using Path Synopses. - Yury Soldak; Maxim Lukichev (ADBIS, 2008)

An XML-algebra for efficient set-at-a-time execution. - Maxim Lukichev; Boris Novikov 001; Pankaj Mehra (Comput. Sci. Inf. Syst., 2012)