Download files from websites using HTTP.jl, Gumbo.jl and Cascadia.jl

General Usage
1

Hello

I’m trying to download files from different URLs. In this application, every website has a link called “Formulário de Referência”.

Given these two websites

sites = ["http://www.dynamo.com.br/pt/empresa/dig"
         "http://www.riogestao.com.br/download.php"]

I’m trying to download the file that can be accessed when clicking the link “Formulário de Referência”.

When I use HTTP.jl and Gumbo.jl like this

for site in sites
    r = HTTP.request("GET", site)
    doc = parsehtml(String(r.body))
end

Inside doc there is link like this

<a href="/uploads/c570e13449bc0c4035eea186994a6896de1ae4bc.pdf"target="_blank">
    Formulário de Referência
</a>

or this

<a href="download/pdf/Formulario de Referencia.pdf"target="_blank">
<img alt="Documento PDF"height="16"border="0"src="img/icon_pdf.gif"width="20"></img>
    - FORMULÁRIO DE REFERÊNCIA
</a>

I would like to know if there is a way of getting the URLs of the download using these packages.
The URLs would be:

Thanks!