In their account <http://dx.doi.org/10.1016/0022-4049(87)90048-X> of Sjogren's theorem, Cliff and Hartley refer to two articles:


[9] B. Hartley, A note on a lemma of Sjogren relating to. dimension subgroups, Research Report 229, Department of Mathematics, National University of Singapore, 1985.


[21] G.E. Wall, to appear. (!)


I am especially interested in the second reference, but no article by G.E. Wall from that period seems to match the (somewhat terse) citation.


Does someone have a scanned copy of these prepublications? Many thanks in advance



Preprint by Wall on Sjogren's theorem
The paper you are looking for seems to be 


G. E. Wall: *Dependence of Lie relators for Burnside varieties*, Groups—Canberra 1989
Lecture Notes in Mathematics Volume **1456** (1990) pp 191-197.


In particular, I think that the relation with the article you are reading is at page 193 (but Wall's construction looks much more general).


It is actually possible to find Wall's paper on the web. If you do not find it, contact me and I will send you a copy by email. 


