From Osher Doctorow

Now take a look at Gennadii Kotelnikov's (Russian Research Center
Kurchatov Institute, Moscow) "On the new symmetries in electrodynamics
and quantum theory," physics/0410020 v1 4 Oct 2004, and then
Answers.com for tachyons and for bosonic string theory and Nambu-Goto
action and Conformal Anomaly and Weyl anomaly and Weyl transformation
and then Tadahito Nakajima (Nihon U., Japan) "Conformal anomalies in
noncommutative gauge theories," hep-th/0108158 v3 12 Oct 2002, and
Ashoke Sen's (Mehta Reserch Institute of Mathematics and Mathematical
Physics, India) "Stable non-BPS bound states of BPS D-branes,"
hep-th/9805019 v3 28 May 1998 and his 2000 paper hep-th/0010240 v2 30
Oct 2000.

Osher Doctorow