@article{DVMG_2015_15_1_a10,
     author = {I. P. Yarovenko},
     title = {A formula for the gradient of the output signal in positron emission tomography},
     journal = {Dalʹnevosto\v{c}nyj matemati\v{c}eskij \v{z}urnal},
     pages = {121--128},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {2015},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DVMG_2015_15_1_a10/}
}