Pointer to template types?

[Chris via Digitalmars-d-learn]

I need an array that contains pointers to types created via 
template. To stick to my usual example:

Person!(string)

How can I make an array with pointers to concrete "instances" of 
Person!(string)?

Something like this only with pointers, i.e. buf holds pointers 
to concrete Person!(string)s:

Appender!(Person!(string)[]) buf = appender!(Person!(string)[]);

Thanks in advance.