diff --git a/terminology/terminology.tex b/terminology/terminology.tex
index c07a054..71dc147 100644
--- a/terminology/terminology.tex
+++ b/terminology/terminology.tex
@@ -29,9 +29,14 @@ \section{Allograph}
 \section{Hieroglyph and glyph}
 The term \emph{hieroglyph} and \emph{glyph} are not precise terms.
 Both are used in epigraphic literature, to address a group of one or more graphemes.
-They are considered to be equivalent and interchangeable throughout this work.
-\emph{Glyphs} can represent a syllable, single words or even a whole phrase 
-(\cite[1]{bricker1986}, (\cite[23]{macrilooper2003})).
+\textcquote[1]{bricker1986}{A ``glyph'' is a sign that can occur alone or in combination with 
+other signs}.
+\textcquote[34]{knorozov1967}{A hieroglyph consists of several graphemes, which are joined 
+in writing}. 
+Both expressions are considered to be equivalent and interchangeable throughout this work.
+\emph{Glyphs} can represent a syllable, a single word or even a whole phrase 
+(\cite[23]{macrilooper2003}).
+
 For example, the glyph~\ref{fig:terminology-glyphs-utzapaw} consists of the 
 graphemes \grapheme{u}, \grapheme{tz\glottalstop{}a} and \grapheme{wa} representing the phrase
 \mayan{u tz\glottalstop{}apaw}, ``she/he erects it''.