http://ai.mit.edu

http://fsf.org/

http://fsf.org/Everyoneispermittedtocopyanddistributeverbatimcopiesofthislicensedocument,butchangingitisnotallowed.PreambleTheGNUGeneralPublicLicenseisafree,copyleftlicenseforsoftwareandotherkindsofworks.Thelicensesformostsoftwareandotherpracticalworksaredesignedtotakeawayyourfreedomtoshareandchangetheworks.Bycontrast,theGNUGeneralPublicLicenseisintendedtoguaranteeyourfreedomtoshareandchangeallversionsofaprogram|tomakesureitremainsfreesoftwareforallitsusers.We,theFreeSoftwareFoundation,usetheGNUGeneralPublicLicenseformostofoursoftware;itappliesalsotoanyotherworkreleasedthiswaybyitsauthors.Youcanapplyittoyourprograms,too.Whenwespeakoffreesoftware,wearereferringtofreedom,notprice.OurGeneralPublicLicensesaredesignedtomakesurethatyouhavethefreedomtodistributecopiesoffreesoftware

http://ftp.gnu.org/pub/gnu/gperf/.Apaperdescribinggperf'sdesignandimplementationingreaterdetailisavailableintheSecondUSENIXC++Conferenceproceedingsorfromhttp://www.cs.wustl.edu/~schmidt/resume.html.

http://gnu.org

http://www.gnu.org/licenses/

http://www.gnu.org/licenses/.Alsoaddinformationonhowtocontactyoubyelectronicandpapermail.Iftheprogramdoesterminalinteraction,makeitoutputashortnoticelikethiswhenitstartsinaninteractivemode:programCopyright

http://www.gnu.org/licenses/.TheGNUGeneralPublicLicensedoesnotpermitincorporatingyourprogramintoproprietaryprograms.Ifyourprogramisasubroutinelibrary,youmayconsideritmoreusefultopermitlinkingproprietaryapplicationswiththelibrary.Ifthisiswhatyouwanttodo,usetheGNULesserGeneralPublicLicenseinsteadofthisLicense.But

http://www.gnu.org/philosophy/why-not-lgpl.html