Google is your friend. But Barbara Hambly may be found at, as you might have guessed it:
www.barbarahambly.com and her new novellas under the Further Adventures in the sidebar.
I'll warn that she also sells some old short stories which can be found cheaper in e-book compilations available elsewhere, such as Baen, but her blog lists the newly written stuff as it comes out and the longer things are the new ones anyway.