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The title of the bibliography is yielding in all small letters except the first letter. Is that coming from a particular bibliography style? Is there any way to insert capital letters amid the tilte? I am using ieeetr style and is supposed to be ideal for my work. Please advise on this.

I got it, adding the command line in the main file overrides all default settings.
Thanks a million.

Yes. It is a non-standard customized class which is created by unknown author. The .cls file I attached herewith. However, the command \usepackage[sqare,comma]{natbib} didn't work. I tried to use natbib style also which yielded citation formats like Authorname(2008).

The citation format is (1;2;3) in the template I am using. How should I change it to [1,2,3] ? Can anybody please tell me. I tried with different .sty and .bst files-pairs but couldn't do it.