Mel’nik, T. A. (2006) “Asymptotic behavior of eigenvalues and eigenfunctions of the Fourier problem in a thick multilevel junction”, Ukrains’kyi Matematychnyi Zhurnal, 58(2), pp. 195–216. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3447 (Accessed: 27April2024).