Correction to: Partial Differential Equations and Applications (2023) 4:1 https://doi.org/10.1007/s42985-022-00218-8

Although the final equations of the model in Espath [1, (7) and (8)] are correct, I committed a mistake with the sign of the term \(\xi _{\scriptscriptstyle \mathcal {S}}{\dot{\varphi }}_{\scriptscriptstyle \partial \mathcal {P}}\) along the manuscript where it should have been \(- \xi _{\scriptscriptstyle \mathcal {S}}{\dot{\varphi }}_{\scriptscriptstyle \partial \mathcal {P}}\). This typographical error was corrected in the online version of the manuscript.