Meh... I don't much care for labels, and leaving it at "libertarian" is probably specific enough. But if you really care, I associate a lot with the "voluntaryist" and/or "anarcho-capitalist" schools of thought. My beliefs about the ownership of land are in a state of flux and I'm not actually convinced there is any truly objective way to settle that issue.
Look up Henry George, specifically "Progress and Poverty."
His land taxation regime is to say the least controversial, but it's still compelling and it's something. It's also considered responsible for much of the rapid progress out of medievalism in the Far East late in the 19th/early in the 20th Century. Singapore, Hong Kong, Japan all had periods of very rapid industrialization under land taxes.
No less than William F. Buckley referenced Henry George more than once.
http://geolib.com/essays/sullivan.dan/royallib.html