@article{VTAMU_2018_23_122_a7,
     author = {A. S. Apartsyn and I. V. Sidler},
     title = {The test {Volterra} equation of the first kind in integral models of developing systems containing  $n$ age groups},
     journal = {Vestnik rossijskih universitetov. Matematika},
     pages = {168--179},
     publisher = {mathdoc},
     volume = {23},
     number = {122},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VTAMU_2018_23_122_a7/}
}