Santos, R.D.C. dos and Sales, J.H. de O. 2024. An essay on the foundations of variational methods: Exploring Sobolev Spaces for boundary integral equations. The Journal of Engineering and Exact Sciences. 10, 7 (Jul. 2024), 18895. DOI:https://doi.org/10.18540/jcecvl10iss7pp18895.