Here you can hear the pronounce by a Russian speaking person.

As to the romanization, which usually does have a standard form in any language, I'd use the one of the language you are writing in your paper. In English it is Chebyshev (not Chebychev). You can see the corresponding versions switching to other languages from the linked article in en.wikipedia (list of languages on the left).

Here you can hear the pronounce by a Russian speaking person.

As to the romanization, which usually does have a standard form in any language, I'd use the one of the language you are writing in your paper. In English it is Chebyshev (not Cheby_ch_ev). You can see the corresponding versions switching to other languages from the linked article in en.wikipedia (list of languages on the left).

Here you can hear the pronounce by a Russian speaking person.

Here you can hear the pronounce by a Russian speaking person.

As to the romanization, which usually does have a standard form in any language, I'd use the one of the language you are writing in your paper. In English it is Chebyshev (not Chebychev). You can see the corresponding versions switching to other languages from the linked article in en.wikipedia (list of languages on the left).