====== Topics and papers to include in review ======
  * Approaches based on Price equation (Etterson & Shaw 2001, Morrisexy et al. 2010, Ozgul et al. 2009)
  * Applications of Bürger & Lynch framework: Willi and Hoffman 2008, Gienapp et al. 2012. Huey and Kingssolver 1993
  * Older literature on moving optimum (cited by Reinhard)
  * Generally: applied models (e.g. Kuparinen et al. 2010, Kearney et al. 2009)
  * Gene flow as constraint
  * Small versus large mutations: Orr 2010
  * Speed of adaptation in general (artificial selection, cost of selection [Barton & Partridge 2000], Fisher's fundamental theorem, clonal interference, Hill-Robertson effect)
  * Extreme value theory? (Bell 2013)
  * Models of demographic stochasticity?
  * Sexual vs. asexual populations (e.g. Bürger 1999)
  * Rate of increase in fitness ("rate of adaptation")?
  * Adaptation and evolutionary rescue in a community context (Jones 2008, BMC Evol Biol)