@misc {IOPORT.03816915,
    author       = {Neumaier, A.},
    title        = {New techniques for the analysis of linear interval equations.},
    howpublished = {Freib. Intervall-Ber. 83/4, 73 p. (1983).},
    year         = {1983},
    identifier   = {03816915},
}