The moneys allocated by R.S. 11:901.28 shall be further used to provide old age assistance for any person who served as house mother in any dormitory of a state supported college of Louisiana:
The allowance available under this plan shall be paid monthly in equal amounts and shall be computed by multiplying the average of the last five years of salary by 1 1/2% times the number of years of certified service and adding thereto the sum of $150 but not to exceed $600 per annum.
Any person applying for benefits under this Section, in order to qualify, shall file application with the board of trustees of the teachers' retirement system of Louisiana within 90 days after July 27, 1960 in compliance with such rules and regulations as said board may adopt, and with said application shall file a detailed certified statement of all Louisiana service for which credit is claimed.
La. Consolidated Public Retirement § 11:901.30