Awesome book! I'm just trying to upload it to Google Play Books but I cannot upload it. I tried to run this validator: http://validator.idpf.org/application/validate and I got the next Fatal error:
`
Type
File
Line
Position
Message
FATAL
frontmatter.xhtml
44
62
Fatal Error while parsing file 'The reference to entity "asin-com" must end with the ';' delimiter.'.
Hi,
`