From Irrational to Non-Unitary: on the Haffnian and Haldane-Rezayi wave   functions
  We study the Haffnian and Haldane-Rezayi quantum Hall wave functions and their quasihole excitations by means of their `root configurations', and point out a close connection between these seemingly different states. For both states, we formulate a `generalized Pauli-principle', which allows to count the degeneracies of these states. The connection between these states might elucidate the underlying theory describing the `irrational' Haffnian state. 
Maria Hermanns, Nicolas Regnault, B. Andrei Bernevig, and Eddy Ardonne
cond-mat.str-el cond-mat.mes-hall