Fielding, R. T., J. Gettys, J. C. Mogul, H. Frystyk, L. Masinter, P. Leach, and T. Berners-Lee,
Hypertext Transfer Protocol -- HTTP/1.1,
: Internet Engineering Task Force, June, 1999.
Fielding, R. T., J. Gettys, J. C. Mogul, H. Frystyk, L. Masinter, P. Leach, and T. Berners-Lee,
RFC 2616: Hypertext Transfer Protocol – HTTP/1.1,
: Internet Engineering Task Force, June, 1999.