Columbia subject headings:
Calculus of variations--Congresses.
Differential equations, Partial--Congresses.
Mathematical optimization--Congresses.
Harvard subject headings:
Calculus of variations--Congresses.
Differential equations, Partial--Congresses.
Mathematical optimization--Congresses.
Princeton subject headings:
Calculus of variations--Congresses.
Differential equations, Partial--Congresses.
Mathematical optimization--Congresses.