chapter 1 Laplace transform second-order Møller–Plesset methods in the atomic orbital basis for periodic systems / chapter 2 Density fitting for correlated calculations in periodic systems / chapter 3 The method of increments—a wavefunction-based correlation method for extended systems / chapter 4 The hierarchical scheme for electron correlation in crystalline solids / chapter 5 Electrostatically embedded many-body expansion for large systems / chapter 6 Electron correlation in solids: Delocalized and localized orbital approaches / chapter 7 Ab initio Monte Carlo simulations of liquid water