Notwithstanding any other provision of law to the contrary, effective July 1, 1977, the pension being received, pursuant to the provisions of R.S. 11:1371, or any other legislative act, by an unmarried widow of a retired judge who died on September 2, 1975, shall be increased by ten percent of the first ten thousand dollars in benefits being received, but in no event by less than an amount which will result in a total amount to be received from all sources of four hundred dollars per month. The payment of the increase in pension herein provided shall be made from the same sources from which the deceased retired judge was compensated at the time of death for services rendered as a member of the court of which he served. The public authorities which contribute to the payment of the pension shall make adequate provisions for the increase in the pension in the same manner they do for judges and justices in active service.
La. Consolidated Public Retirement § 11:1374