{{doi-inline|doi|text}}

will link text to the object identified by doi. If no text is given, it will produce [n], as if you had linked it directly using [http://dx.doi.org/doi].

The {{doi-inline|10.1007/b62130|Red Book of Varieties and Schemes}}.
The Red Book of Varieties and Schemes {{doi-inline|10.1007/b62130}}.

gives:

The Red Book of Varieties and Schemes.
The Red Book of Varieties and Schemes [೧].

In PDF and Books these will be:

The Red Book of Varieties and Schemes (doi:10.1007/b62130).
The Red Book of Varieties and Schemes (doi:10.1007/b62130).