The Definitive Guide to db4o
S. Edlich, J. Paterson et. al., The Definitive Guide to db4o, Apress, 2006, ISBN 1-59059-656-0 (3 chapters are available for free download)
Operational Database Management Systems
S. Edlich, J. Paterson et. al., The Definitive Guide to db4o, Apress, 2006, ISBN 1-59059-656-0 (3 chapters are available for free download)