Nelson, Garrett Dash Rae, Alasdair Tract-to-Tract Commutes of 80km/50 miles or less in California. <p>Tract-to-Tract Commutes of 80km/50 miles or less in California.</p> perspective;megaregion;method;United States;understanding areal aggregation 2016-11-30
    https://plos.figshare.com/articles/figure/Tract-to-Tract_Commutes_of_80km_50_miles_or_less_in_California_/4275218
10.1371/journal.pone.0166083.g002