Domoshnitsky, A., Mizgireva, I. and Raichik, V. (2021) “Semi-nonoscillation intervals and sign-constancy of Green’s functions of two-point impulsive boundary-value problems”, Ukrains’kyi Matematychnyi Zhurnal, 73(7), pp. 887–901. doi:10.37863/umzh.v73i7.473.