* 1 code is constructed in:
M. Harada, "Construction of an extremal self-dual code
of length 62",IEEE Trans. Inf. Theory, Vol. 45 (1999), pp. 1232-1233.
* 20 codes are constructed in:
R. Dontcheva and M. Harada, "New extremal self-dual codes of length 62
and related extremal self-dual codes", preprint.