D’Addario strings
www.daddario.com

BIS, record company
www.bis.se

NAXOS, record company
http://www.naxos.com/mainsite/default.asp?pn=artists&instru=&op=&char=P

Guitar Foundation of America
www.guitarfoundation.org

Gunnar Eisel's Worldguitarist
www.worldguitarist.com

Primeart, Cultural Productions
www.primeart.gr

Classical Guitar magazine
www.ashleymark.co.uk/classicalguitar.htm

Soundset Recordings
www.Soundset.com

Les Cahiers de la Guitare, french guitar magazine
www.cahiers-de-la-guitare.org

Editions Papagrigoriou - Nakas
www.panasmusic.com

Giorgos Koumendakis, composer
www.mmb.org.gr/eem_en/composers/Koumentakis_Giorgos/koumendakis_giorgos_en.htm

Dimitri Nicolau, composer
www.homestead.com/dimitrinicolau/index.html