It doesn’t seem particularly likely that a single paper is going to shift the views of large numbers of linguists on this point!
(If anyone’s interested in more detail) a good recent presentation of the kurgan hypothesis is David Anthony’s _The Horse, The Wheel And Language_ (ISBN 0691058873); a (compressed) summary of the argument against the anatolian hypothesis is that the relationships between wheel-related words in IE languages indicate that PIE speakers had the wheel, and that this is inconsistent with the timeline of the anatolian hypothesis on archaeological grounds. The argument in favour of the steppe origin in particular is based on (according to my notes l-) farming-related vocabulary and relationships with other eurasian language groups.
Colin Renfrew has a decent book holding the opposing view, though it’s getting on a bit now - I don’t know if there’s anything more recent.