RETRACTED: Synthesis of hollow maghemite (<gamma>-Fe2O3) particles for magnetic field and pH-responsive drug delivery and lung cancer treatment
Ceramics International (2021) - Comments
doi: 10.1016/j.ceramint.2020.11.086  issn: 0272-8842 

Sheng Li, Renzi Zhang, Daoxin Wang, Li Feng, Kang Cui