Mondal, Sukumar . Some sequential and parallel algorithms on interval, permutation and trapezoid graphs / researched by Sukumar Mondal; guided by Tapan Kumar Pal and Madhumangal Pal. - Midnapore : Vidyasagar University , 2003. - iv,179p. : ills.,figs. ; 25cm . Document represents Ph.D Thesis Subjects--Index Terms: MATHEMATICAL MODELS ALGORITHMS Dewey Class. No.: 511.8 / MON/S