925-939 A 1999 analysis found that between 1976 and 1999 in 19% of US cities sampled there was an increase of relative use of "Dixie", in 48% of cities sampled there was a decline and there was no change recorded in 32% of cities, Derek H. Alderman, Robert Maxwell Beavers, "Heart of Dixie Revisited: an Update on the Geography of Naming in the American South", [in:] "Southeastern Geographer" XXXlX/2 (1999), p. 196 while a 2010 study found that in the course of 40 years the area in question shrank to just 40000 sqmi , to the territory at the confluence of Louisiana, Mississippi, Alabama and Florida.