Chaitra, U and Ali, Muhammed A V and Viegas, Alison and Kekuda, Dhananjaya and Rao, Mohan K (2019) Growth and characterization of undoped and aluminium doped zinc oxide thin films for SO2 gas sensing below threshold value limit. Applied Surface Science, 496. 143724(1)-143724(11). ISSN 0169-4332