Daly, Richard Timon.
Applications of the Mathematical Theory of Linguistics / - 1st ed / - Hague : Mouton & Co. N.V., Publishers. - p.116 :
PObB / L4D
Applications of the Mathematical Theory of Linguistics / - 1st ed / - Hague : Mouton & Co. N.V., Publishers. - p.116 :
PObB / L4D