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Pati, Swapan K and Ramasesha, S and Shuai, Z and Bredas, JL (1999) Dynamical nonlinear optical coefficients from the symmetrized density-matrix renormalization-group method. In: Physical Review B, 59 (23). pp. 14827-14830.
Shuai, Z and Bredas, JL and Pati, SK and Ramasesha, S (1997) Quantum-confinement effects on the ordering of the lowest-lying excited states in conjugated chains. In: Physical Review B: Condensed Matter, 56 (15). pp. 9298-9301.
Shuai, Z and Pati, Swapan K and Su, WP and Bredas, JL and Ramasesha, S (1997) Binding energy of $1B_u$ singlet excitons in the one-dimensional extended Hubbard-Peierls model. In: Physical Review B, 55 (23). pp. 15368-15371.
Ramasesha, S and Pati, Swapan K and Krishnamurthy, HR and Shuai, Z and Bredas, JL (1996) Symmetrized density-matrix renormalization-group method for excited states of Hubbard models. In: Physical Review B, 54 (11). pp. 7598-7601.