@article{DAN_1976_229_6_a5,
     author = {S. V. D'yachenko},
     title = {Semigroups of almost negative type and their applications},
     journal = {Doklady Akademii Nauk},
     pages = {1306--1309},
     publisher = {mathdoc},
     volume = {229},
     number = {6},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1976_229_6_a5/}
}