(HTM) 4.html
 (DOC) 4.pdf
 (TXT) 4.ps
 (TXT) 4.tex
 (DOC) 9.pdf
 (TXT) 9.ps
 (HTM) index.html
 (TXT) odd
 (DOC) weier.pdf
 (TXT) weier.ps
 (TXT) weier.tex