New Exhibits of the Items with Champleve Enamels in Sumy Regional Museum (Preliminary Report) - L. I. Bilynska; V. M. Bilyk; O. M. Buhai; O. V. Hopkalo; Ye. L. Horokhovskyi; O. M. Derevianko (Arkheolohiia i davnia istoriia Ukrainy, 2021)