when you mix different metadata you loss on quality. Yes you can merge them but then you need to square the number of dictionaries respect than languages. AArrgh
C. Kaleta, F. Centler, and P. Dittrich. 34, page 117-124. Humana Press, (October 2006)Proceedings of the 7 th Conference on Protein Expression in Animal Cells(PEACe).
A. Lindgren, and K. Eriksson. Proceedings of the Ninth International Conference on the Simulation and Synthesis of Living Systems, ALIFE'9, page 456. Boston, (12-15 09 2004)