Determination and validation of theophylline by high-performance liquid chromatography in human plasma / Éva Nagy, Sarolta Benkő, Imre Klebovich
  Bibliogr. 13 tétel, Abstr. hun., eng.
  In: Acta Pharmaceutica Hungarica. - ISSN 0001-6659. - 1991. 61. évf. 4. sz., p. 169-175.