- TheStreet.com
etf-profits.thestreet.com/author/alex-gurvich - Real Money
realmoney.thestreet.com/authors/alex-gurvich - Seeking Alpha
seekingalpha.com/author/alex-gurvich/articles - Welzia Management
www.welzia.com - Morningstar (Spain) – Welzia Rockledge Multisectorial Fund rank
www.morningstar.es/es/snapshot/snapshot.aspx?id=F000000E7L - Select Sector SPDRs
www.spdrindex.com - AltaVista Independent Research
www.altavista-research.com - FINalternatives
www.finalternatives.com - New York Hedge Fund Roundtable
www.newyorkhedgefundroundtable.com