: after author in bibliography

[Jorgen Johansson]

Hello,

I am trying to comply with the following bibliography style.

1) Author.: Title, J. Mech. Phys. Solids., Vol. 13, pp. 213-222, 1965.

I have managed to get the "1) infront by changin the biblabel following 
some instructions on Herbert Voss tricks page.

Then I tried to hack the "unsrt.bst" by first renaming it to 
"myunsrt.bst" and changed the line
{ title "t" change.case$ }
to read
{": " title * "t" change.case$ }

the reference came out something like this.

1) Author. : Title...

I don't want to be picky but the space in between "Author." and the ":" 
does not look good.

Can any suggest any remedy for this problem.

jorgen