297,703 SALMO MATTI Failures after radiotherapy of lip cancer analysed by clinical mpdels : /thesis/ Matti Salmo : Helsinki University. - Helsinki : Societas Scientiarum Fennica, 1988. — 102 s. ; 26 cm (Commentâtiones Physico-Mathematicae, ISSN 0069-6609 ; 84/1988. Dissertationes, ISSN 0358-9307 ; nr 13)