(a) the dormitory authority of the state of New York;
  (b) the urban development corporation;
  (c) the New York state thruway authority;
  (d) the New York state environmental facilities corporation;
  (e) the New York state housing finance agency.
  2.  "Authorized  purpose"  for  purposes  of  this article and section
ninety-two-z  of  this  chapter  shall  mean  any  purposes  for   which
state-supported  debt,  as  defined  by  section  sixty-seven-a  of this
chapter, may or has been issued except  debt  for  which  the  state  is
constitutionally  obligated  thereunder  to pay debt service and related
expenses.
  3. "Revenue bonds" for  the  purposes  of  this  article  and  section
ninety-two-z  of this chapter shall mean any bonds, notes or obligations
issued or incurred pursuant to section sixty-eight-b of this article.