@article{JRC20549, address = {}, year = {2000}, author = {Schimmel H and Kristiansen N and Baptist M and Pauwels J}, abstract = {Abstract not available }, title = {The IVD-MD Directive: A Need for Reference Systems of a Higher Metrological Order.}, type = {}, url = {}, volume = {}, number = {}, journal = {Special issue of Fresenius' Journal of Analytical Chemistry}, pages = {}, issn = {}, publisher = {}, doi = {} }