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Fundamenta Informaticae > 2017 > Vol. 151, nr 1/4 > 49--62
Applied Mathematics Letters > 2012 > 25 > 3 > 344-351
Applied Mathematics Letters > 2010 > 23 > 10 > 1188-1192
Fundamenta Informaticae > 2017 > Vol. 151, nr 1/4 > 49--62
Applied Mathematics Letters > 2012 > 25 > 3 > 344-351
Applied Mathematics Letters > 2010 > 23 > 10 > 1188-1192