Correction to: Estimation of Self Noise of Geomagnetic and Geoelectric Field Sensors by the Method of Multichannel Measurements

The formula for λ_+,− at the bottom of page 754 should read

$$ {\uplambda}_{+,-}=\left[\left({S}_{ii}+{S}_{jj}\right)\pm \sqrt{{\left({S}_{ii}-{S}_{jj}\right)}^2+4{\left|{S}_{ij}\right|}^2}\right]/2. $$

The formula for X at the top of page 755 should read

$$ X=\frac{\uplambda_{+}-{\uplambda}_{-}}{2\left|{C}_i{C}_j^{\ast}\right|}=\frac{\sqrt{{\left({S}_{ii}-{S}_{jj}\right)}^2+4{\left|{S}_{ij}\right|}^2}}{2\left|{C}_i{C}_j^{\ast}\right|}. $$