Modeling Multiple Risks: Hidden Domain of Attraction
  Hidden regular variation is a sub-model of multivariate regular variation and facilitates accurate estimation of joint tail probabilities. We generalize the model of hidden regular variation to what we call hidden domain of attraction. We exhibit examples that illustrate the need for a more general model and discuss detection and estimation techniques. 
Abhimanyu Mitra and Sidney I. Resnick
math.PR math.ST q-fin.RM stat.TH