anchor.diff:  george b lansbury,durham university,united kingdom
   george privon,universidad de concepcion,chile
   gerold busch,"i. physikalisches institut, university of cologne",germany
  -giallongo e.,inaf - observatory of rome,italy
  +emanuele giallongo,inaf - observatory of rome,italy
   giorgio lanzuisi,inaf oa-bologna,italy
   giulia a.d. savorgnan,swinburne university (melbourne),australia
   guilherme dos santos couto,universidade federal do rio grande do sul (ufrgs),brazil
   gustavo adolfo orellana gonzalez,universidad de concepcion,chile
   hai fu,university of iowa,usa
  -hirschmann michaela,institut d'astrophysique - cnrs,france
  +michaela hirschmann ,institut d'astrophysique - cnrs,france
   hsin-yi shih,gemini observatory - north,usa
   hyun-jin bae,yonsei university,south korea
   ingyin zaw,new york university abu dhabi,united arab emirates
   ioannis georgantopoulos,national observatory of athens,greece
   ismael garca bernete,instituto de astrofsica de canarias,spain
   ivan delvecchio,"(1) university of zagreb, physics department, (2) university of bologna, department of physics and astronomy",croatia
  -j. xavier prochaska,uc santa cruz,usa
  +xavier prochaska,uc santa cruz,usa
   james aird,"institute of astronomy, university of cambridge",united kingdom
   james allen,university of sydney,australia
   jared gabor,cea saclay,france
  
positive.code: marcella brusa,difa - universita' di bologna,italy
  margherita talia,dipartimento di fisica e astronomia - universita di bologna,italy
  marie wingyee lau,"university of california, santa cruz",usa
  marie-luise menzel,"max-planck-institute for extraterrestrial physics, garching",germany
  marios karouzos,seoul national university,south korea
  marko stalevski,universidad de chile,chile
  masatoshi imanishi,subaru telescope,usa
  meg urry,yale university,usa
  menci nicola,inaf - osservatorio astronomico di roma,italy
  michael cowley,macquarie university & the australian astronomical observatory,australia
  michael pracy,university of sydney,australia
  "mickaelian, areg m.",byurakan astrophysical observatory (bao),armenia
  minnie yuan mao,nrao,usa
  mischa schirmer,gemini south,chile
  mojegan azadi,"uc san diego, center for astrophysics&space sciences",usa
  montserrat villar martin,centro de astrobiologia (inta/csic),spain
  mnica silvia taormina,universidad de concepcin,chile
  neil nagar,universidad de concepcion,chile
  neven caplar,"institute for astronomy, eth zurich",switzerland
  nick scoville,caltech,usa
  
negative.code: roberto bertoldo menezes,"instituto de astronomia, geofsica e ciencias atmosfricas - universidade de sao paulo",brazil
  roberto j. assef,universidad diego portales,chile
  rogemar a. riffel,universidade federal de santa maria,brazil
  rogerio riffel,ufrgs,brazil
  ronald lasker,mpia,germany
  rosalie mcgurk,university of california santa cruz,usa
  roy lawrence slater clement,university of concepcion,chile
  