Coherent states associated to the wavefunctions and the spectrum of the   isotonic oscillator
  Classes of coherent states are presented by replacing the labeling parameter $z$ of Klauder-Perelomov type coherent states by confluent hypergeometric functions with specific parameters. Temporally stable coherent states for the isotonic oscillator Hamiltonian are presented and these states are identified as a particular case of the so-called Mittag-Leffler coherent states. 
K. Thirulogasanthar and Nasser Saad