@conference {1559, title = {AMS measurement of}, booktitle = {Sixteenth International Radiocarbon Conference}, volume = {40(1)}, year = {1998}, note = {id: 1643}, month = {1998}, pages = {247-253}, address = {Groningen}, author = {von Reden, K. F. and McNichol, A. P. and Pearson, A. and Schneider, R. J.} }