sentences:  His thesis advisor was Michael Mussa, former economic counselor and director of the Department of Research at the International Monetary Fund from 1991 to 2001.He is married to Catherine Mansell, an American academic, writer and economist who has authored several books on finance and on literary fiction and nonfiction under the pen name C. M. Mayo.In the mid-1980s Carstens returned to Mexico and rejoined the Bank of Mexico.