1. [1] Bannai, Etsuko Positive definite unimodular lattices with trivial automorphism groups, Memoirs of the American Mathematical Society, 429, American Mathematical Society, 1990, 70 pages
2. [2] Conway, John H.; Sloane, Neil J. A. Sphere packings, lattices and groups, Grundlehren der Mathematischen Wissenschaften, 290, Springer, 1999, lxxiv+703 pages
3. GAP — Groups, Algorithms, and Programming, Version 4.11.0;The GAP Group,2020
4. Ternary code construction of unimodular lattices and self-dual codes over ;Harada, Masaaki;J. Algebr. Comb.,2002
5. On the existence of extremal Type II -codes;Harada, Masaaki;Math. Comput.,2014