:(t) In Equations (3) and (A6), 7. should be defined as As noted in the appendix of our paper the density (A24) is in general non-physical. However, for 3/o2 = 1 (A24) now reduces to ~ --c2e-2*oe~2~ 2, which suggests that half-space solutions exist having reasonable physical behaviours but no Newtonian analogues. Bonner has recently found a solution of this type (Bonner, W.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.