APA-referens

Perlick, V. Fermats principle, Morse theory and applications to the gravitational lens effect.

Chicago-stil citat

Perlick, Volker. Fermats Principle, Morse Theory and Applications to the Gravitational Lens Effect.

MLA-referens

Perlick, Volker. Fermats Principle, Morse Theory and Applications to the Gravitational Lens Effect.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.