@misc{indiciaec260ff5c2c64, title = {Using the GRAIL language for classification management.}, author = {P E Zanstra and E J van der Haring and F Flier and J E Rogers and W D Solomon}, year = {1997}, url = {https://pubmed.ncbi.nlm.nih.gov/10179587/}, note = {Source identifier: 10179587} }