deletions | additions       diff --git a/introduction.tex b/introduction.tex  index c295a07..ca26f45 100644  --- a/introduction.tex  +++ b/introduction.tex 
...
Our curiosity about Neanderthals has been increasing steadily, specially during the last 20 years, with 2055 papers already published (12 papers in 1994; 215 papers in 2014; source: Scopus, accessed March 27th, 2015). Our current knowledge is becoming deeper in areas like chronology (e.g. \cite{Hardy_2010} \cite{Gaudzinski_Windheuser_2014} \cite{Higham_2014}), ecology (e.g. \cite{Stewart_2005} \cite{Finlayson_2007} \cite{Henry_2010}), population dynamics (e.g. \cite{Trinkaus_1995} \cite{Premo_2008} \cite{Fabre_2009} \cite{S_rensen_2011} \cite{Bocquet_Appel_2013}), adaptive traits (e.g. \cite{Sorensen_2001} \cite{Wynn_2004} \cite{S_rensen_2009} \cite{Daujeard_2012} \cite{Rae_2011} \cite{L_pez_Garc_a_2012}), diet (e.g. \cite{Stringer_2008} \cite{Richards_2009} \cite{Henry_2010} \cite{Hardy_2011} ), technology and cognition (e.g. \cite{Wynn2004467} \cite{Hardy201323} \cite{Fern_ndez_Peris_2012} \cite{Riel_Salvatore_2010}), genetics (e.g. \cite{Fabre_2009} \cite{Pr_fer_2013} \cite{Briggs_2009} \cite{Sanchez_Quinto_2014} \cite{Vernot_2014}) and their relationship with anatomically modern humans (e.g. \cite{Gibbons_2014} \cite{Sankararaman_2012} \cite{Banks_2008} \cite{d_Errico_1998}).   Still, our knowledge about their geographical distribution across time and its drivers remains sparse and shallow.  Distribution papers: \cite{Krause_2007} \cite{Roebroeks2002} \cite{Roebroeks_2006} \cite{Skrzypek_2011} \cite{_lvarez_Alonso_2014} \cite{Wenzel_2007}  GAPS IN THE KNOWLEDGE ABOUT NEANDERTHALS DISTRIBUTION AND ENVIRONMENTAL DRIVERS.