title: [Recognition of spikes of Schizonepeta tenuifolia from different area based on backpropagation neural network coupled with dimension reduction of principal component analysis].
authors.affiliation: College of Pharmacy, Nanjing University of Chinese Medicine, Nanjing 210046, China.
authors.forename: Weifeng
authors.initials: W
authors.lastname: Yao
authors.forename: Linlin
authors.initials: L
authors.lastname: Cao
authors.forename: Mingqiu
authors.initials: M
authors.lastname: Shan
authors.forename: Li
authors.initials: L
authors.lastname: Zhang
authors.forename: Anwei
authors.initials: A
authors.lastname: Ding