[R-sig-Geo] Citation for spgwr

[Milan Sharma]

Hi Roger,
 Please let me know if the following way of citing spgwr is incorect:

In references:  Bivand, R., Yu, D.
(2013) spgwr:  Geographically weighted
regression. R package version 3.0


and within the text: 
We usedthe spgwr
package (Bivand and Yu 2013) for GWR in the statistical software package R,
version 3.0 (R Development core team 2013).

Please let me know if any thing is incorrect.
Thanks,
Milan