• A Commentary on the Sixth Edition of the Unix Operating System (1977) http://www.lemis.com/grog/Documentation/Lions/index.php 19 comments 27/9/2024
• Commentary on the sixth edition Unix operating system (1977) [pdf] https://cs3210.cc.gatech.edu/r/unix6.pdf 12 comments 15/9/2021
• A Commentary on the Sixth Edition Unix Operating System https://warsus.github.io/lions-/ 2 comments 23/6/2021
• A Commentary on the Sixth Edition Unix Operating System http://warsus.github.io/lions-/ 16 comments 12/12/2017
• Commentary on the Sixth Edition UNIX Operating System http://www.lemis.com/grog/Documentation/Lions/index.php 2 comments 25/6/2010