@article{article,
title = {Assay of pyridoxal-5'-phosphate, pyridoxal and pyridoxic acid in biological material},
author = {},
year = {1989},
journal = {International Journal for Vitamin and Nutrition Research. Internationale Zeitschrift für Vitamin- und Ernahrungsforschung. Journal International de Vitaminologie et de Nutrition},
volume = {59},
number = {4},
pages = {338-343},
howpublished = "\url{https://eurekamag.com/research/039/330/039330310.php}"
}