>>> Purchase by the City of Hohenems
2008: The Cultural Office of the City of Hohenems purchases
one piece from the series/exhibition „4-4-2“.
>>> Art in Germany, Austria and Switzerland
2008: Latest informations (most of addresses) about arts in Germany, Austria and Switzerland. See pages 512 and 513.
ISBN 978-3-598-23116-2
K. G. SAUR; Issue 18; German
526 pages; brochure (adresses); 98.00 EURO
>>> Hübners Who is Who in Österreich
2008: There is an entry about Martin Stock in issue 22.
ISBN 3-7290-0074-8
Who is Who Verlag publisher of peoples encyclopedia
Issue 22; 206/380/584 EURO
>>> Biographical Encyclopedia: Educational Art in Vorarlberg 1945-2005
2006: Publication of the reference book about educational artists with the main focus on Vorarlberg. See page 294.
ISBN 978-3-902525-36-9
Bucher Verlag Hohenemes; 343 pages; 49.50 EURO
>>> Purchase by the City of Hohenems
October 2005: The Cultural Office of the City of Hohenems purchases two pieces from the series „EMS“.