message: Use "and" to separate authors with bibtex
diff: }
  @incollection{gudhi:SubSampling
  -, author = "Cl\'ement Jamin, Siargey Kachanovich"
  +, author = "Cl\'ement Jamin and Siargey Kachanovich"
  , title = "Subsampling"
  , publisher = "{GUDHI Editorial Board}"
  , edition = "{@GUDHI_VERSION@}"
  }
  @incollection{gudhi:RipsComplex
  -, author = "Cl\'ement Maria, Pawel Dlotko, Vincent Rouvreau, Marc Glisse"
  +, author = "Cl\'ement Maria and Pawel Dlotko and Vincent Rouvreau and Marc Glisse"
  , title = "Rips complex"
  , publisher = "{GUDHI Editorial Board}"
  , edition = "{@GUDHI_VERSION@}"
  }
  @incollection{gudhi:Collapse
  -, author = "Siddharth Pritam"
  +, author = "Siddharth Pritam and Marc Glisse"
  , title = "Edge collapse"
  , publisher = "{GUDHI Editorial Board}"
  , edition = "{@GUDHI_VERSION@}"
  