@mastersthesis{jaeschke2005struktur,
  author = {Jäschke, Robert},
  title = {Die Struktur der Monoide binärer Relationen auf endlichen Mengen},
  school = {Technische Universität Dresden},
  year = {2005},
  url = {http://www.kde.cs.uni-kassel.de/pub/pdf/jaeschke2005struktur.pdf}
}

@article{konieczny05,
  author = {Konieczny, Janusz},
  title = {A Proof of {D}evadze's Theorem on Generators of the Semigroup of Boolean Matrices},
  year = {2005},
  note = {to be published}
}

@article{konieczny02,
  author = {Konieczny, Janusz},
  title = {The Semigroup Generated by Regular Boolean Matrices},
  journal = {Southeast Asian Bulletin of Mathematics},
  year = {2002},
  volume = {25},
  pages = {627-641}
}

@article{konieczny94,
  author = {Konieczny, Janusz},
  title = {Green's Equivalences in Finite Semigroups of Binary Relations},
  journal = {Semigroup Forum},
  year = {1994},
  volume = {48},
  pages = {235-252}
}

@phdthesis{konieczny92,
  author = {Konieczny, Janusz},
  title = {Semigroups of binary Relations},
  school = {The Pennsylvania State University},
  year = {1992}
}

@book{kim82,
  author = {Kim, Ki Hang},
  title = {Boolean Matrix Theory and Applications},
  publisher = {Marcel Dekker},
  year = {1982},
  volume = {70}
}

@article{gregory81,
  author = {de Caen, D. and Gregory, D. A.},
  title = {Primes in the Semigroup of Boolean Matrices},
  journal = {Linear Algebra and its Applications},
  publisher = {American Elsevier Publications},
  year = {1981},
  volume = {37},
  pages = {119-134}
}

@inproceedings{gregory80,
  author = {de Caen, D. and Gregory, D. A.},
  title = {Prime boolean matrices},
  booktitle = {Combinatorial Mathematics VII},
  year = {1980},
  volume = {829},
  pages = {76-82}
}

@article{kim78,
  author = {Kim, Ki Hang and Roush, Fred W.},
  title = {Inverses of Boolean matrices},
  journal = {Linear Algebra and its Applications},
  year = {1978},
  volume = {22},
  pages = {247-262}
}

@article{kim77,
  author = {Kim, Ki Hang and Roush, Fred W.},
  title = {On generating regular elements in the semigroup of binary relations},
  journal = {Semigroup Forum},
  year = {1977},
  volume = {14},
  pages = {29-32}
}

@article{markowsky77,
  author = {Markowsky, George},
  title = {Bounds on the index and period of a binary relation on a finite set},
  journal = {Semigroup Forum},
  year = {1977},
  volume = {13},
  pages = {253-259}
}

@techreport{denes76,
  author = {Denes, J. and Kim, K. H. and Roush, F. W.},
  title = {A characterization of an inverse for semigroup elements},
  year = { 1976}
}

@article{schein76,
  author = {Schein, Boris M.},
  title = {Regular elements of the semigroup of all binary relations},
  journal = {Semigroup Forum},
  year = {1976},
  volume = {13},
  pages = {95-102}
}

@article{schein70,
  author = {Plemmons, R. J. and Schein, B. M.},
  title = {Groups of Binary Relations},
  journal = {Semigroup Forum},
  year = {1970},
  volume = {1},
  pages = {267-271}
}

@article{plemmons70,
  author = {Plemmons, R. J. and West, M. T.},
  title = {On the semigroup of binary relations},
  journal = {Pacific Journal of Mathematics},
  year = {1970},
  volume = {35},
  number = {3},
  pages = {743-753}
}

@article{montague69,
  author = {Montague, J. S. and Plemmons, R. J.},
  title = {Maximal Subgroups of the Semigroup of Relations},
  journal = {Journal of Algebra},
  year = {1969},
  volume = {13},
  pages = {575-587}
}

@article{yang69,
  author = {Yang, Jaw-Ching},
  title = {A theorem on the semigroup of binary relations},
  journal = {Proceedings of the American Mathematical Society},
  year = {1969},
  volume = {22},
  pages = {134-135}
}

@article{zaretski63,
  author = {Zarecki, K. A.},
  title = {Die {H}albgruppe der binären {R}elationen},
  journal = {Matematiceskij Sbornik},
  year = {1963},
  volume = {61},
  pages = {291-305},
  note = {(russisch)}
}

@book{clifford61,
  author = {Clifford, A. H. and Preston, G. B.},
  title = {The Algebraic Theory of Semigroups, Volume I},
  publisher = {American Mathematical Society},
  year = {1961},
  number = {7}
}

@article{green51,
  author = {Green, J. A.},
  title = {On the structure of semigroups},
  journal = {Annals of Math.},
  year = {1951},
  volume = {54},
  pages = {163-172}
}