Possible ~1 hour quasi-periodic oscillation in narrow-line Seyfert 1 galaxy MCG–06–30–15Alok C. Gupta, Ashutosh Tripathi, Paul J. Wiita, Minfeng Gu, Cosimo Bambi and Luis C. HoA&A, 616 (2018) L6DOI: https://doi.org/10.1051/0004-6361/201833629