In old physics and engineering publications from the 1950s or so, it's common to see non-SI "double prefixes", such as a "millimicrosecond pulse", or a "10 micromicrofarad" capacitor.
These units are considered obsolete today. However, I failed to find a historical review on the use of these units.
In which year did units like "nano-" and "pico-" become parts the SI-standard?
When did the use of standard SI-prefix become common and largely replaced the "double prefixes" in engineering?