Fast linear scaling second-order Møller-Plesset perturbation theory (MP2) using local and density fitting approximations

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Efficient multi-scale computation of products of orbitals in electronic structure calculations (2010, methodology): “Successful applications have been reported for Møller-Plesset perturbation theory [4,23,49,50] and the coupled cluster method [39,42].”
On the low-rank approximation by the pivoted Cholesky decomposition (2012, background): “We do not go into the details here and refer the reader to [25, 26, 27].”
Tensor-Structured Factorized Calculation of Two-Electron Integrals in a General Basis (2013, methodology): “It is known since long time in quantum chemistry simulations [5, 41, 43] that, in case of compact molecules, the (pivoted) incomplete Cholesky factorization of the N(2) b ×N(2) b TEI matrix unfolding,”