Hacker News
- Rules of formulating knowledge in learning (1999) https://www.supermemo.com/en/archives1990-2015/articles/20rules 2 comments
- Effective learning: Twenty rules of formulating knowledge (1999) https://www.supermemo.com/en/articles/20rules 17 comments
- Good sleep, good learning, good life (2012) https://www.supermemo.com/en/articles/sleep 254 comments
- Effective learning: Rules of formulating knowledge (1999) https://www.supermemo.com/en/articles/20rules 35 comments
- Good sleep, good learning, good life http://www.supermemo.com/articles/sleep.htm 121 comments
- Polyphasic Sleep: Facts and Myths http://www.supermemo.com/articles/polyphasic.htm 26 comments
- Formula for Healthy Sleep by Piotr Wozniak http://www.supermemo.com/articles/sleepchart.htm 10 comments
- Good sleep, good learning, good life http://www.supermemo.com/articles/sleep.htm 61 comments
- Twenty rules of formulating knowledge http://www.supermemo.com/articles/20rules.htm 2 comments