This is a nice paper by Klugman. Not hard to understand if you have
Exam C or course 4.
Life Product Valuation:
http://library.soa.org/library/tsa/1990-95/TSA90V427.pdf
Copula:
http://archimede.mat.ulaval.ca/pages/genest/publi/NAAJ_1998.pdf
Credibility with Copula:
http://research.bus.wisc.edu/jfrees/Papers/FreesWangIMESubmission.pdf