In the original paper, Eq. (9) (p. 041701-3) and the expression for parameters λ (p. 041701-4, after Eq. (32)) and ρ (p. 041701-5, after Eq. (40)) are not correct.

The corrected equations should read:
Qx=Mxx=2M0g2(ξ)le+Q0g4(ξ)
(9)
λ=νE(1t11t2)2Dk2le22
ρ=(12β)δ+βωle1