When any such appropriation is to be financed by borrowing money, the governing body of the local unit shall, by a 2/3 vote of the full membership thereof, adopt a resolution:
a. Setting forth the amount appropriated, and
b. Making provision for the borrowing of money by the issuance of "special emergency notes" which may be renewed from time to time, but at least 1/3 of all such notes, and the renewals thereof, shall mature and be paid in each succeeding year so that all notes and renewals shall have matured and have been paid not later than the last day of the third year following the date of the special emergency resolution.