On the estimation of a covariance matrix in designing Parzen classifiers.

Yoshihiko Hamamoto Yasushi Fujimoto Shingo Tomita On the estimation of a covariance matrix in designing Parzen classifiers. 1751-1759 1996 29 Pattern Recognit. 10 https://doi.org/10.1016/0031-3203(96)00027-1 db/journals/pr/pr29.html#HamamotoFT96