To cite MUMPS in publications use:

Amestoy PR, Duff IS, Koster J, L'Excellent J (2001). “A Fully Asynchronous Multifrontal Solver Using Distributed Dynamic Scheduling.” SIAM Journal on Matrix Analysis and Applications, 23(1), 15–41.

Amestoy PR, Guermouche A, L'Excellent J, Pralet S (2006). “Hybrid scheduling for the parallel solution of linear systems.” Parallel Computing, 32(2), 136–156.

Corresponding BibTeX entries:

  @Article{,
    title = {A Fully Asynchronous Multifrontal Solver Using Distributed
      Dynamic Scheduling},
    author = {P. R. Amestoy and I. S. Duff and J. Koster and J.-Y.
      L'Excellent},
    journal = {SIAM Journal on Matrix Analysis and Applications},
    year = {2001},
    volume = {23},
    number = {1},
    pages = {15--41},
  }

  @Article{,
    title = {Hybrid scheduling for the parallel solution of linear
      systems},
    author = {P. R. Amestoy and A. Guermouche and J.-Y. L'Excellent and
      S. Pralet},
    journal = {Parallel Computing},
    year = {2006},
    volume = {32},
    number = {2},
    pages = {136--156},
  }