“…Workers who live and work on opposite 'sides' of Berlin seem to have increased in the 9-year period, which seems to be a reasonable and somehow expected finding, considering that the data for the first year conceived, 1995, were collected only 5 years after reunification. Therefore, it makes sense to expect a gradual redistribution of residential and business location choices on both sides of Berlin, This might be particularly true for relocations into the formerly Soviet side of the city, where rents are, or were, supposedly cheaper (see, for example, Kemper 1998). As explained in the previous section, the two Berlin districts are kept separate in this data set.…”