T. B. N. Nguyen, N. Nguyen Trong, T. Nguyen Thi, T. Nguyen Duc, and L. Nghiem Thi Ha, “Role of chitosan in enhancing Raman signal and improving uniformity of paper-based SERS substrate”, Comm. Phys., vol. 35, no. 3, p. 289, Sep. 2025.