References

Julia documentation. numbers. https://docs.julialang.org/en/release-0.4/stdlib/numbers/

Kent State University. SPSS Recode. https://libguides.library.kent.edu/SPSS/RecodeVariables

Stata. egen. https://www.stata.com/manuals13/degen.pdf

w3schools.com. SQL BETWEEN OPERATOR. https://www.w3schools.com/sql/sql_between.asp