Bosnian language

Yesterday someone changed the Bosnian word for 'Bosnian' (for their own
language) from 'Bosanski' to 'Bosnjacki' on their own, on the Croatian and
on the Serbian Wikipedia. Scanning with Google, there were 120,000 hits for
'Bosanski', and some 2,300 for 'Bosnjacki'.

I wanted to ask, maybe someone knows about the difference between this words
and can point out, which one should be used (this refers to the other
Wikipedias as well). I wouldn't like to make this wrong, as it is a rather
touchy issue...

Best regards,
Denny