@article{DE_2003_39_3_a3,
     author = {A. G. Lomtatidze and B. Puzha and R. Hakl},
     title = {On the {Periodic} {Boundary} {Value} {Problem} for {First-Order} {Functional-Differential} {Equations}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {320--327},
     publisher = {mathdoc},
     volume = {39},
     number = {3},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2003_39_3_a3/}
}