PUBLIC "-//OASIS//DTD Simplified DocBook XML V1.0//EN"
       "sdocbook-custom.dtd"

PUBLIC "-//OASIS//DTD Simplified DocBook XML V1.0//EN"
       "sdocbook.dtd"

PUBLIC "-//OASIS//DTD Simplified DocBook RefEntry XML V1.0//EN"
       "sdocbookref-custom.dtd"

PUBLIC "-//OASIS//DTD Simplified DocBook RefEntry XML V1.0//EN"
       "sdocbookref.dtd"