CSS Selector for a <a href> has me stuck..

[ks-nss]

I'm having some trouble extracting links from a table on this website. I've tried using various CCS Selectors / XPath expressions, but none of them seem to be working. I am able to get the text "Download" for example but not the url / relative url.

Here's an example of the HTML structure:

...

Cell 1

Cell 2

Cell 3

Link

And here is my

And this is my python dictionary...

    pubs_schema = {
        "name": "news",
        "baseSelector": "tr",
        "fields": [
            {
                "name": "Reference",
                "selector": "td:nth-child(1)",
                "type": "text",
            },
            {
                "name": "Description",
                "selector": "td:nth-child(2)",
                "type": "text",
            },
            {
                "name": "Date",
                "selector": "td:nth-child(3)",
                "type": "text",
            },
            {
                "name": "View",
                 "selector": "//tr/td[4]/a[/@href",
                 "type": "url",
            },
            {
                "name": "Download",
                "selector": "td:nth-child(5) > a:nth-child(1)",
                "type": "url",
            },
        ],
    }

However, when I run my scraper, i am unable to get either of the two url's on the page, although I can get other fields ok. When I try and print out the values I typical just get...

, , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , ,

or I get

Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download, Download

Can anyone help me figure out what's going on? Am I missing something obvious?
Thanks.

[ks-nss]

Read more of the documentation, and the following worked for me.

            {
                "name": "Download",
                "selector": "td:nth-child(5) a",
                "type": "attribute",
                "attribute": "href"
            },