Show HN: Citeurl – Find article's url from citation

Hello, I made this simple app to help me whenever I'm reading some journal article. I always want to give a quick peek at some referenced article but searching google for the citation almost never gives me a link to the right article, and copying and pasting is always quicker than filling some database archive's search form.

I really like the regexp matching approach because is fast and doesn't need any database at all, the downside is that not all publishers' websites have meaningful urls :(

I choose Flask to make this because I am learning python for my work and Flask seemed to be really easy to make a one-page app like this, and indeed with very few lines of code and trips over to the documentation I was able to pull this off in the weekend.

Tell me what you think and feel free to suggest any improvement or addition, i would really like this to be useful for more people than the ones that live between the four astrophysics journals I implemented :)