Hammarberg, R. 1974. Another Look at Finnish Consonant Gradation. Soviet Finno-Ugric Studies 10. 171–178.
@article{hammarberg1974, author = {Hammarberg, R.}, journal = {Soviet Finno-Ugric Studies}, pages = {171–178}, title = {Another Look at Finnish Consonant Gradation}, volume = {10}, year = {1974} }