Columbia subject headings:
Differential equations, Partial--Congresses.
Functional analysis--Congresses.
Harmonic analysis--Congresses.
Harvard subject headings:
Differential equations, Partial--Congresses.
Differential equations--Congresses.
Functional analysis--Congresses.
Harmonic analysis--Congresses.
Harmonic functions--Congresses.
Princeton subject headings:
Differential equations, Partial--Congresses.
Functional analysis--Congresses.
Harmonic analysis--Congresses.