@article{Man98,
    author = {I.I. Mandoiu},
    title = {Optimum extensions of prefix codes},
    journal = {Information Processing Letters},
    year = {1998},
    volume = {66},
    pages = {35-40},
    url = {http://dx.doi.org/10.1016/S0020-0190(98)00026-X},
    file = {Man98.pdf},
    confidential = {n}
}