REMS
| Date | Clue |
|---|---|
| 2020-03-22 | Radiation units |
| 2017-07-21 | Sleep phenomena |
| 2015-11-01 | Sleep stages |
| 2014-07-16 | Dream states, for short |
| 2012-04-29 | Sleep stages |
| 2010-11-28 | Signs of dreaming |
| 2010-04-09 | Phenomena after retiring |
| 2010-01-21 | Bedtime phenomena |
| 2009-01-12 | Radiation units |
| 2005-10-23 | Radiation units |
| 2004-03-25 | Radiation units |
| 2004-01-30 | Sleep activities |
| 2003-08-19 | Radiation measures |
| 2003-06-11 | Radiation units |
| 2002-03-24 | Radiation dosages |
| 1999-01-03 | Sleep phenomena |
| 1998-08-09 | Sleep phenomena |
| 1998-07-07 | Sleep phenomena |
| 1997-07-30 | Radiation units |
| 1995-12-26 | X-ray measurements |
| 1994-08-13 | Dream states |
| 1994-03-06 | Dream stages |