Churchill, Ruel V. (Ruel Vance), 1899-1987
Fourier series and boundary value problems.
Fourier series.
Functions, Orthogonal.
Boundary value problems.
Series (Matematica) larpcal
Fourier, Sřies de.
Fonctions orthogonales.
Problm̈es aux limites.
Randwaardeproblemen. gtt
Fourier-reeksen. gtt