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Rommer, Stefan; Ostlund, Stellan (1996-06-28). "Class of ansatz wave functions for one-dimensional spin systems and their relation to the density matrix renormalization group". Physical Review B. 55 (4): 2164–2181. arXiv:cond-mat/9606213. doi:10.1103/PhysRevB.55.2164.
Wouters, Sebastian; Poelmans, Ward; Ayers, Paul W.; Neck, Dimitri Van (2014-01-08), "CheMPS2: A free open-source spin-adapted implementation of the density matrix renormalization group for ab initio quantum chemistry", Computer Physics Communications, 185 (6): 1501–1514, arXiv:1312.2415, Bibcode:2014CoPhC.185.1501W, doi:10.1016/j.cpc.2014.01.019