Families of irreducible singular Gelfand-Tsetlin modules of   $\mathfrak{gl}(n)$
  We prove a conjecture for the irreducibility of singular Gelfand-Tsetlin modules. We describe explicitly the irreducible subquotients of certain classes of singular Gelfand-Tsetlin modules. 
Carlos Alexandre Gomes and Luis Enrique Ramirez
math.RT