@electronic{www.lulu.com,
   title       = {Lulu.com - Self Publishing - Free}, 
   url         = {http://www.lulu.com/},
   biburl      = {https://puma.uni-kassel.de/url/b3a84540bfaeb1b37535d906ca72cb51/hotho},
   keywords    = {publishing opensource},
   added-at    = {2006-10-05T09:21:00.000+0200},
   description = {},
   interhash   = {b3a84540bfaeb1b37535d906ca72cb51}, 
   intrahash   = {b3a84540bfaeb1b37535d906ca72cb51}
}