different output for "online" and "only online" articles

A lot of NRC journals have different rules for online and only online articles. For example instruction from http://www.nrcresearchpress.com/page/gen/authors#9d:

Journal article with DOI:
Anderson, J.A., Churchill, G.A., Autrique, J.E., Tanksley, S.D., and Sorrells, M.E. 1993. Optimizing parental selection for genetic linkage maps
Genome, 36(1): 181–186. Available from http://www.nrcresearchpress.com/doi/pdf/10.1139/g93-024 [accessed 4 September 2014].


Journal article with URL:
Sterling, J.T., and Ream, R.R. 2004. At-sea behavior of juvenile male northern fur seals (Callorhinus ursinus). Can. J. Zool. 82(10): 1621–1637. Available from http://www.nrcresearchpress.com/doi/abs/10.1139/z04-136 [accessed 28 October 2005].

Journal article available online only (with DOI):
van der Sanden, J.J., and Hoekman, D.H. 2005. Review of relationships between grey-tone co-occurrence, semivariance, and autocorrelation based image texture analysis approaches [online]. Can. J. Remote Sens. 31(3): 207–213. doi:10.1139/rs03-011.

I think, this is not possible to solve in this version of CSL or is it?
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