Retraction Note to: Mechanical properties and electronic structures of compressed C60, C180 and C60@C180 fullerene molecules

The Editor-in-Chief has retracted this article [1] because it has been previously published by the same author in a Chinese-language journal [2]. The Chinese-language version was not cited in the duplicate publication and also it had a second author, XC Mu, who was not included in this article. The author apologizes for any inconvenience caused. The author agreed to this retraction.