Rahim's research has been focused on the effects of microbially-induced calcium carbonate precipitation on the retention properties of unsaturated soils. 

His paper (the one appearing above) can be accessed at:

https://ascelibrary.org/doi/abs/10.1061/%28ASCE%29GT.1943-5606.0002053

It was with my great delight that I learned Rahim's research results were of use and interest to colleagues working on the potential of microbially-induced carbonate precipitation (MICP) in mitigating drought, for instance, please see the following:

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2020WR029434

https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024WR037486