by McNicholl, I R, Palmer, S M, Ziska, D S, Cleary, J D
Published in The Annals of pharmacotherapy (01.05.1999)

by Ross, Samir A, Ziska, David S, Zhao, Ke, ElSohly, Mahmoud A
Published in Fitoterapia (01.04.2000)

by Ziska, David S, Ziska, Elaine
Published in Drug Topics (17.04.2000)