How to make two references in single bracket: [1,2]

The question is, in fact, in title. There is no information in manual. Using the manual I can produce single citation in single brackets, like [1], [2]. But I need two numbers in single bracket [1,2].
I found this in menu. Sometimes it is difficult to find what you need. This information is absent in manual.

When you type \cite Enter, there is something on the focus toolbar helping you with this.

I do not know the shortcut of this, however.

The keyboard shortcut should be “Meta + Right arrow” when you’re inside \cite. In my case this is “Esc + Right arrow”.