You could try following the authors and asking them specifically, on ResearchGate, or if not, perhaps contacting them at the University of Western Australia.

This is the first author's directory page:

https://directory.uwa.edu.au/view?dn=cn%253DAsha%2520Gunawardena%252Cou%253DSchool%2520of%2520Agriculture%2520and%2520Environment%252Cou%253DFaculty%2520of%2520Science%252Cou%253DFaculties%252Co%253DThe%2520University%2520of%2520Western%2520Australia

This is Prof Ben White's contact page:

https://research-repository.uwa.edu.au/en/persons/ben-white

I could not find Prof Ems Wijeratne at the School of Environmental Systems Engineering

But the other two authors are based at the

https://www.uwa.edu.au/science/schools/uwa-school-of-agriculture-and-environment

I hope this helps,

Mary

Hi Mary C R Wilson ,

Thank you very much for taking time.

I tried emailing the corresponding author and I really hope it will work.

Good luck with this.

Very best wishes,

Mary

You can mail the corresponding author

I agree with Joshua

Contact the authors.

Masoud Yeganeh

I was wondering if you had neem successful? I hope you have.