Generated by SassMeister.com.

SassMeister-input.scss

// ----
// Sass (v3.3.7)
// Compass (v1.0.0.alpha.18)
// ----

$ands: (
  de: "und", 
  en: "and", 
  es: "y",
  fr: "et",
  no: "og",
  sv: "och"
);

.article-author {
  display: inline;
  white-space: nowrap;
  &:not(:last-child):after {
    content: ", ";
  }
  @each $language, $word in $ands {
    &:nth-last-child(2):not(:first-child) {
      html[lang=#{$language}] &:after {
        content: ", #{$word} ";
      }
    }
    &:nth-last-child(2):not(:nth-child(2)) {
      html[lang=#{$language}] &:after {
        content: " #{$word} ";
      }
    }
  }
}

SassMeister-output.css

.article-author {
  display: inline;
  white-space: nowrap;
}
.article-author:not(:last-child):after {
  content: ", ";
}
html[lang=de] .article-author:nth-last-child(2):not(:first-child):after {
  content: ", und ";
}
html[lang=de] .article-author:nth-last-child(2):not(:nth-child(2)):after {
  content: " und ";
}
html[lang=en] .article-author:nth-last-child(2):not(:first-child):after {
  content: ", and ";
}
html[lang=en] .article-author:nth-last-child(2):not(:nth-child(2)):after {
  content: " and ";
}
html[lang=es] .article-author:nth-last-child(2):not(:first-child):after {
  content: ", y ";
}
html[lang=es] .article-author:nth-last-child(2):not(:nth-child(2)):after {
  content: " y ";
}
html[lang=fr] .article-author:nth-last-child(2):not(:first-child):after {
  content: ", et ";
}
html[lang=fr] .article-author:nth-last-child(2):not(:nth-child(2)):after {
  content: " et ";
}
html[lang=no] .article-author:nth-last-child(2):not(:first-child):after {
  content: ", og ";
}
html[lang=no] .article-author:nth-last-child(2):not(:nth-child(2)):after {
  content: " og ";
}
html[lang=sv] .article-author:nth-last-child(2):not(:first-child):after {
  content: ", och ";
}
html[lang=sv] .article-author:nth-last-child(2):not(:nth-child(2)):after {
  content: " och ";
}