Https://scholar.google.com.au/scholar_url?url=https%3A%2F%2Fcairns.nsta.edu.au%2Fauthor%2Fdenimcream0%2F&hl=id&sa=T&ct=res&cd=15&d=11708055477725539970&ei=YU03XNb6L8f1ygSZ6rDgCw&scisig=AAGBfm