Economists warned today that Puerto Rico's decade-long recession will only deepen if it does not attract investors and stimulate its economy to offset an austere new fiscal plan. The warning came during a meeting by a federal control board that oversees the island's finances to explore ways to revive the economy. The austerity measures it has imposed "will not in themselves be enough to pull Puerto Rico out if its economic crisis," said board chairman Jose Carrion. Carrion added that Economic development must be a priority.