@article{article8ecd33b0,
title   = {Phenylalanine conversion to tyrosine . Comparative determination with l- ['RING'- 'ANTPOT.2 H IND.5'] phenylalanine and l-' [1-C] POT.13' phenilalanine as tracers in man},
author = {Marchini, Julio Sergio and Castillo, L and Chapman, T E and Vogt, J A and Ajami, A and Young, V R},
year = {1993},
journal   = {Metablism}
}