
Sheldon's JOURNAL.
The Big Bang Theory Season 3, Episode 13

See the paper in The American
Physics Journal on supersolids?
The Big Bang Theory Season 4, Episode 3

in a distinguished JOURNAL
that may change
The Big Bang Theory Season 5, Episode 12

...pick up a pen and get it all out
in my JOURNAL. I mean...
The Big Bang Theory Season 6, Episode 24

Research JOURNAL, entry one.
The Big Bang Theory Season 3, Episode 10