title: lore : a lightweight object repository for semistructured data 1996. authors: janet l. wiener , jason mchugh , serge abiteboul , qingshan luo , anand rajaraman , dallan quass , jeffrey d. ullman , roy goldman , hugo rivero , jennifer widom , svetlozar nestorov , kevin haas. venue: sigmod conference. year: nan
title: describing semistructured data acm sigmod record 2001. authors: luca cardelli. venue: nan. year: nan