INTEGRAL detection of a hard X-ray transient in NGC 6440 - Kuulkers, E.; Bozzo, E.; Bazzano, A.; Beckmann, V.; Bird, T.; Bodaghee, A.; Chenevez, J.; Santo, M. Del; Domingo, A.; Jonker, P.; Kretschmar, P.; Paizis, A.; et al. (The Astronomer's Telegram, 2015)