Stäckel, Paul 197 Publications (1885–1997) indexed 221 Citations Co-Authors: Borel, Émile; Engel, Friedrich; Laugel, Léonce; … Main Fields: Functions of a complex variable (30-XX); History and biography (01-XX); Calculus of variations and optimal control; optimization (49-XX); ... Published as: Stäckel, P.; Stäckel, Paul; Staeckel, P.; Pfister, F.; Stäckel more...less