Notes on methods for chromosomal integration:
http://www.intechopen.com/books/advances-in-applied-biotechnology/built-in-synthetic-gene-circuits-in-escherichia-coli-methodology-and-applications
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2847246/
CRIM: http://jb.asm.org/content/183/21/6384.abstract