Erratum for The Hierarchy‐Niche Model for Supply Networks

In Luo and Whitney (2019), the Equation (4) on page 672 was published incorrectly, it should read as follows:

E ( K ) = E ( M ) N = ∑ i = 1 N - 1 E ( r i ) = ∑ i = 1 N - 1 E ( X ( 1 - γ i ) ) = ∑ i = 1 N - 1 E ( X ) E ( 1 - γ i ) = ( N - 1 ) 2 E ( X )

(4)