I am trying to read the following paper by Leon Brillouin (the part on page 16 onwards):

>Léon Brillouin, _Sur une méthode de calcul approchée de certaines intégrales dite méthode du col_, Annales scientifiques de l’É.N.S. $3^\text{e}$ série, tome 33 (1916), pp 17–69, doi:[10.24033/asens.690](https://doi.org/10.24033/asens.690).

Is there some English translation to this paper?

I tried using Google translate, but it makes a poor job.
Thanks!