1. James D., Botteron, C.: Understanding singular vectors. Coll. Math. J. 44(3), 220–226 (2013)
2. Jolliffe, I.T.: Principal Component Analysis. Springer, New York (2002)
3. Kim, J., Mueller, C.W.: Factor Analysis: Statistical Methods and Practical Issues. SAGE Publications, Newbury Park (1978)
4. Lancaster, P., Tismenetsky, M.: The Theory of Matrices. Academic, Cambridge (1985)
5. Strang, G.: Linear Algebra and Learning from Data. Wellesley-Cambridge Press, Wellesley (2019)