RSTS-11 System Users Guide(PDF) (DEC-11-ORSUA-D-D (RSTS/E V06A-02) ed.). Digital Equipment Corporation. 1975. pp. 2–16–2–17. Archived from the original(PDF) on 21 March 2011. Retrieved 22 March 2011.
Jayasooriya, Tarith (16 September 2020). "nSign". nsign. Retrieved 12 October 2020.
u-tokyo.ac.jp
eoc.eri.u-tokyo.ac.jp
"What is WIN system?" (in Japanese). Earthquake Observation Center, Earthquake Research Institute, U. Tokyo, Japan. Archived from the original on 2 April 2016. Retrieved 5 May 2016.
RSTS-11 System Users Guide(PDF) (DEC-11-ORSUA-D-D (RSTS/E V06A-02) ed.). Digital Equipment Corporation. 1975. pp. 2–16–2–17. Archived from the original(PDF) on 21 March 2011. Retrieved 22 March 2011.
"What is WIN system?" (in Japanese). Earthquake Observation Center, Earthquake Research Institute, U. Tokyo, Japan. Archived from the original on 2 April 2016. Retrieved 5 May 2016.