Price Dispersion and Competition with Differentiated Sellers

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An empirical model of search with vertically differentiated products (2011, background): “However, several studies have found that some sellers set on average higher prices than others, while at the same time prices change frequently (see, for instance, Lach, 2002; Baye, Morgan, and Scholten, 2004; Lewis, 2008).”
9. Variance Function Regressions for Studying Inequality (2009, background): “Agricultural studies have recently examined variability in the survival rates of ﬁsh populations, and modelled the variance of crop yields (Minto, Myers, and Blan-chard 2008; Edwards and Jannink 2006).”
Consumer search and dynamic price dispersion: an application to gasoline markets (2011, background): “For example, Lewis (2008), Hosken et al. (2008), and Lach and Moraga-Gonzalez (2009) nd evidence of mixed strategies | and hence consumer search | in the gasoline market by noting that the probability that a seller's price remains in the same quartile of the distribution in the following period is…”