@article{10_1090_S1079_6762_03_00110_0,
     author = {Ol\^a€™shanskii, A. and Sapir, M.},
     title = {The conjugacy problem for groups, and {Higman} embeddings},
     journal = {Electronic research announcements of the American Mathematical Society},
     pages = {40--50},
     publisher = {mathdoc},
     volume = {09},
     year = {2003},
     doi = {10.1090/S1079-6762-03-00110-0},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/S1079-6762-03-00110-0/}
}