$\mu_L$

$\mu_S$

$\mu_Q$

$\sigma_L^2$

$\sigma_S^2$

$\sigma_Q^2$

$\sigma_e^2$

$k$

$\sigma_{LS}$

$\sigma_{LQ}$

$\sigma_{SQ}$

$A$

$\mathbf{\Psi}$