Cosets of Meromorphic CFTs and Modular Differential Equations
  Some relations between families of two-character CFTs are explained using a slightly generalised coset construction, and the underlying theories (whose existence was only conjectured based on the modular differential equation) are constructed. The same method also gives rise to interesting new examples of CFTs with three and four characters. 
Matthias R. Gaberdiel, Harsha R. Hampapura and Sunil Mukhi
hep-th