Citation Hunt

The Wikipedia snippet below is not backed by a reliable source. Can you find one?

Click I got this! to go to Wikipedia and fix the snippet, or Next! to see another one. Good luck!

In page Marvin Minsky:

"

Minsky's inventions include the first head-mounted graphical display (1963)[1] and the confocal microscope[2][note 1] (1957, a predecessor to today's widely used confocal laser scanning microscope).[citation needed] With Seymour Papert, he developed the first Logo programming language-driven "turtle robot".[citation needed] In 1951, Minsky built the first randomly wired neural network learning machine, SNARC.[citation needed] In 1962, he worked on small universal Turing machines and published his well-known 7-state, 4-symbol machine.[3]