Worachead Sommanee. 2020. On the semigroup of order-preserving partial isometries of a finite chain with restricted range. Chiang Mai:Chiang Mai Rajabhat University;
Worachead Sommanee. (2020) On the semigroup of order-preserving partial isometries of a finite chain with restricted range (รายงานผลงานวิจัย). Chiang Mai Rajabhat University:Chiang Mai.
Worachead Sommanee. On the semigroup of order-preserving partial isometries of a finite chain with restricted range. Chiang Mai:Chiang Mai Rajabhat University, 2020.
Worachead Sommanee. (2020) On the semigroup of order-preserving partial isometries of a finite chain with restricted range (รายงานผลงานวิจัย). Chiang Mai Rajabhat University:Chiang Mai.