Classification of Healthy and Nematode-Infested Pea Root Using Laser-Induced Breakdown Spectroscopy and k-Nearest Neighbors Modeling. - Kumar, Sandeep; Sharma, Neha; Bali, Varun; Singh, Virendra K.; Nam, Sang-Ho; Lee, Yonghoon; Singh, Vivek K. (Analytical Letters, 2026)