H. Meyer. (2011)cite arxiv:1104.3708Comment: 54 pages, 37 figures, review written for EPJA and APPN; one parag. added end of section 3.4, and one at the end of section 3.2.2; some Refs. added, and some other minor changes.
N. Cardoso, and P. Bicudo. (2011)cite arxiv:1111.1317Comment: results improved, 5 pages, 6 figures, 1 table, work partly done under the PTQCD collaboration.