@article{SF_1986__35_134864,
     author = {P. Olin},
     title = {The word problem in regular band free products.},
     journal = {Semigroup forum},
     pages = {151--156},
     publisher = {mathdoc},
     volume = {35},
     year = {1986},
     zbl = {0614.20041},
     url = {http://geodesic.mathdoc.fr/item/SF_1986__35_134864/}
}