@incollection{iiasa13449,
           month = {January},
       booktitle = {Randomness and Complexity, From Leibniz to Chaitin},
          editor = {C.S. Calude},
           title = {Gregory Chaitin: Mathematician, Philosopher, and Friend},
       publisher = {World Scientific Publishing Co.},
             doi = {doi:10.1142/9789812770837\_0025},
           pages = {417--420},
            year = {2007},
             url = {http://dx.doi.org/10.1142/9789812770837\%5f0025},
            isbn = {978-981277083-7;9812770828;978-981277082-0},
          author = {Casti, J.}
}