“…Accounting for this divergence between Coles and Woolworths and the rest is complicated by lack of data. While there is a small body of scholarly work available (Humphrey, 1998;Brown, 1990, 229-256;Chow, 1991;Nayga Jr. and Riethmuller, 1995;Hubbard 1996aHubbard , 1996bTreadgold, 1996;Merrilees and Miller, 2001;Gottliebsen 2003aGottliebsen , 2003b, Government statistics do not permit Sources: Rows 1 and 2, Report by the Joint Senate Committee on the Retailing Sector (1999), Table 4.3, 43; Row 3, Wrigley (1992), Tables 2, 729; Row 4 Daniel and Hernandez (2008) Tables 4, 13, s 1 and 2, Row 5, Dobson et al (2003) Tables 1, 113 and Tables 3, 116; Row 6, Wrigley (1992), Tables 4, 729. analysis at the firm level (Round, 1974). Archival material is not available for either Coles or Woolworths.…”