Talk:Harnack's principle

Page contents not supported in other languages.
From Wikipedia, the free encyclopedia

References bullet point 2: Broken Link[edit]

The link to Harnack's Principle on Planet Math "http://planetmath.org/node/6657" is broken.

Is this "http://planetmath.org/harnacksprinciple" the source to be referenced?

I would prefer a proper reference from the first source.