Tolcapone: COMT [Catechol O-methyltransferase] inhibition for the treatment of Parkinson's disease / edit. Stanley Fahn Vol. 50 No. 5, Suppl. 5 1998/American Academy of Neurology. Hagerstown : Lippincott-Raven Publishers, 1998. 59 s. [1, z toho voľných 0, prezenčne 1]