@misc{cryptoeprint:2003:134,
    author = {Sugata Gangopadhyay and Subhamoy Maitra},
    title = {Direct Sum of Non Normal and Normal Bent Functions Always Produces Non Normal Bent Functions},
    howpublished = {Cryptology ePrint Archive, Report 2003/134},
    year = {2003},
    url = {http://eprint.iacr.org/2003/134},
}