Here you can find some articles

-2007-
3DCreative Magazine
http://www.3dcreativemag.com/artists/issue025_sep07/interview03.pdf
Cgarena
http://www.cgarena.com/archives/interviews/massimo/interview.html
3D Mansion
http://www.3dmansion.it/index.php?option=com_content&task=view&id=33
http://www.3dmansion.it/index.php?option=com_content&task=view&id=40&Itemid=30
3dvalley
http://www.3dvalley.com/interviews/massimo-righi.shtml

-2008-
Digital-Tutors
http://www.digitaltutors.com/digital_tutors/featured_artist.php?artist=57

Autodesk AREA Behind The Screenz
http://area.autodesk.com/index.php/stories_bts/bts_detail/massimo_righi_beautiful_things/

For those who are interested here you can find the Making Of:

Male Green Frog
http://www.3dtotal.com/team/Tutorials_2/makingof_greenfrog/greenfrog_01.asp

Trapped
http://www.cgarena.com/freestuff/tutorials/maya/trapped/index.html
http://www.3dtotal.com/team/Tutorials_3/trapped/trapped01.asp

Audrey (PSD Magazine Cover issue 03)
http://www.psdmag.org/upload/.psd/Others/download/pdf/ah03.pdf

TigerZoo
http://www.cgarena.com/freestuff/tutorials/maya/tigerzoo/index.html
http://www.3dm3.com/forum/articles.php?action=viewarticle&artid=108

Sunbathing (DigitalArtMastersV2)
http://www.3dtotal.com/articles/DAMV2_promotion/Massimo%20Righi.zip