Korhonen P, Siljamaeki A (1998)
Ordinal principal component analysis theory and an application
Computational Statistics & Data Analysis, 26(4):411-424 [1998] More
Korhonen P, Siljamaeki A, Soismaa M (1998)
Practical Aspects of Value Efficiency Analysis
IIASA Interim Report IR-98-042 (June 1998) More