1. Indoor and outdoor relationships of atmospheric particulates in Oman;Abdul-Wahab;Indoor Built Environ,2006
2. Total suspended dust and heavy metal levels emitted from a workplace compared with nearby residential houses;Abdul-Wahab;Atmos. Environ.,2004
3. Asante-Duah, K., 2017. Public Health Risk Assessment for Human Exposure to Chemicals. Second Edition. Environmental Pollution 27: 315. https://books.google.com.au/books?id=oXYpDwAAQBAJ&pg=PA315&lpg=PA315&dq=the+greater+the+HI+value+above+unity,+the+greater+is+the+probability+of+the+onset+of+adverse+non+carcinogenic+toxicity+effects&source=bl&ots=8LyBcsqcuM&sig=03.
4. Geoinformatics, Google Book Results;Atkinson,2009