Columbia subject headings:
Flux pinning--Congresses.
Superconductivity--Congresses.
Superconductors--Chemistry--Congresses.
Superconductors--Congresses.
Harvard subject headings:
Princeton subject headings:
Flux pinning--Congresses.
Superconductivity--Congresses.
Superconductors--Chemistry--Congresses.
Superconductors--Congresses.