@article{ZNSL_1989_177_a23,
     author = {B. P. Harlamov},
     title = {Characteristic operator and curve integral for {semi-Markov} process},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {170--180},
     publisher = {mathdoc},
     volume = {177},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1989_177_a23/}
}