Did IBM publish papers describing the algorithms used in IBM Watson?


Did IBM publish papers describing the algorithms used in IBM Watson?

Supposedly IBM Watson has 41 different subsystems (which I find analogous to Apple Siri’s 35+ APIs).  I have not seen a complete list of these 41 subsystems; however, the IBM Journal of Research and Development recently published a special issue, “This is Watson” [1].  The electronic version with 17 papers at $31 each would run $527.  Despite a number of direct inquiries, I have been unable to locate any printed version.  🙁

[1] http://ieeexplore.ieee.org/xpl/tocresult.jsp?reload=true&isnumber=6177717