@article{BASM_2018_1_a7, author = {M. M. Choban and I. A. Budanaev}, title = {Distances on free semigroups and their applications}, journal = {Buletinul Academiei de \c{S}tiin\c{t}e a Republicii Moldova. Matematica}, pages = {92--119}, publisher = {mathdoc}, number = {1}, year = {2018}, language = {en}, url = {http://geodesic.mathdoc.fr/item/BASM_2018_1_a7/} }