Direct characterization of caffeoyl esters with antihyaluronidase activity in crude extracts from Echinacea angustifolia roots by fast atom bombardment tandem mass spectrometry.
Journal article published in 1993 by
R. M. Facino,
M. Carini,
C. Marinello,
E. Arlandini,
L. Franzoi,
M. Colombo,
P. Pietta,
P. Mauri,
Giancarlo Aldini 
