The main source file is "xspace.tex."  Just complile it by LaTeX2e.
BODY
#!/bin/csh -f
# Uuencoded gz-compressed .tar file created by csh script  uufiles
# For more info (11/95), see e.g. http://xxx.lanl.gov/faq/uufaq.html
# If you are on a unix machine this file will unpack itself: strip
# any mail header and call resulting file, e.g., hhs001128.uu
# (uudecode ignores these header lines and starts at begin line below)
# Then say        csh hhs001128.uu
# or explicitly execute the commands (generally more secure):
#    uudecode hhs001128.uu ;   gunzip hhs001128.tar.gz ;
#    tar -xvf hhs001128.tar
# On some non-unix (e.g. VAX/VMS), first use editor to change filename
# in "begin" line below to hhs001128.tar-gz , then execute
#    uudecode hhs001128.uu
#    gzip -d hhs001128.tar-gz
#    tar -xvf hhs001128.tar
#
uudecode $0
chmod 644 hhs001128.tar.gz
gunzip -c hhs001128.tar.gz | tar -xvf -
rm $0 hhs001128.tar.gz
exit