M/ISM-11

• https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2203767/pdf/procascamc00011-0467.pdf

From The Roots to InterSystem

• https://community.intersystems.com/post/roots-intersystems

• https://books.google.com/books?id=MmjmCAAAQBAJ&pg=PA55&lpg=PA55&dq=%22ISM-11%22+%22MUMPS%22&source=bl&ots=XxMpr62zRY&sig=ACfU3U3Yg_OHbQ8WHai0lFOymvP-Kd1aJA&hl=en&sa=X&ved=2ahUKEwiXmoKj7fH6AhUUsDEKHbBOADcQ6AF6BAgrEAM#v=onepage&q=%22ISM-11%22%20%22MUMPS%22&f=false

F.H. Roger, ‎P. Grönroos, ‎R. Tervo-Pellikka · 2012 · ‎Medical ... consists of a PDP- 11/44 with ISM-11 stand-alone MUMPS operating system and with approx. 30 VDU's, 4 printer terminals and several auxiliary printers.

https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=1653810