\references{
Paradis, E. (2007) A Bit-Level Coding Scheme for Nucleotides.
\url{http://ape.mpl.ird.fr/misc/BitLevelCodingScheme_20April2007.pdf}
\references{
Paradis, E. (2007) A Bit-Level Coding Scheme for Nucleotides.
\url{http://ape.mpl.ird.fr/misc/BitLevelCodingScheme_20April2007.pdf}