This book by Ragnar Ingi Aðalsteinsson contains essays about poetics. Particularly how the vowels support each other and why certain vowels better fit together than others. How you might tell the age of a poem by looking at how the author lines up the vowels. 
 
ISBN 9789935502780
Author Ragnar Ingi Aðalsteinsson
Publisher Hið íslenska bókmenntafélag, 2024
Format Paperback
Pages 240