Gijbels I, E Mammen, BU Park and L Simar (1999). “On Estimation of Monotone and Concave Frontier Functions.” J American Statistical Association 94(445): 220-228.
Gijbels I, E Mammen, BU Park and L Simar (1999). “On Estimation of Monotone and Concave Frontier Functions.” J American Statistical Association 94(445): 220-228.