?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Horsfall&rft.au=Horsfall%2C+LA&rft.aufirst=LA&rft.pages=2172-2179&rft.issn=2050-7496&rft.title=Journal+of+Materials+Chemistry+A&rft.atitle=An+array+of+WO3+and+CTO+heterojunction+semiconducting+metal+oxide+gas+sensors+used+as+a+tool+for+explosive+detection&rft.volume=5&rft.date=7+February+2017&rft.genre=article