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  1.  3
    REVIEWS-Three papers.B. Balcar & Klaas Pieter Hart - 2002 - Bulletin of Symbolic Logic 8 (4):554-554.
  2.  27
    B. Balcar and F. Franek. Independent families in complete Boolean algebras_. _Transactions of the American Mathematical Society_, vol. 274 (1982), pp. 607–618. - Bohuslav Balcar, Jan Pelant, and Petr Simon. _The space of ultrafilters on N covered by nowhere dense sets_. Fundamenta mathematicae, vol. 110 (1980), pp. 11–24. - Boban Velickovic. _OCA and automorphisms of P(ω)/fin. Topology and its applications, vol. 49 (1993), pp. 1–13.Klaas Pieter Hart, B. Balcar, F. Franek, Bohuslav Balcar, Jan Pelant, Petr Simon & Boban Velickovic - 2002 - Bulletin of Symbolic Logic 8 (4):554.
  3.  7
    OCA and Automorphisms of \scrP(ω)/fin.Klaas Pieter Hart, B. Balcar, F. Franek, Bohuslav Balcar, Jan Pelant, Petr Simon & Boban Velickovic - 2002 - Bulletin of Symbolic Logic 8 (4):554.
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  4.  16
    Ultrafilters of Character $omega_1$.Klaas Pieter Hart - 1989 - Journal of Symbolic Logic 54 (1):1-15.
    Using side-by-side Sacks forcing, it is shown that it is consistent that $2^\omega$ be large and that there be many types of ultrafilters of character $\omega_1$.
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    Ultrafilters of character ω 1.Klaas Pieter Hart - 1989 - Journal of Symbolic Logic 54 (1):1-15.
    Using side-by-side Sacks forcing, it is shown that it is consistent that 2 ω be large and that there be many types of ultrafilters of character ω 1.
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  6.  17
    B. Balcar and F. Franek. Independent families in complete Boolean algebras_. _Transactions of the American Mathematical Society_, vol. 274 (1982), pp. 607–618. - Bohuslav Balcar, Jan Pelant, and Petr Simon. _The space of ultrafilters on N covered by nowhere dense sets_. Fundamenta mathematicae, vol. 110 (1980), pp. 11–24. - Boban Velickovic. _OCA and automorphisms of P(ω)/fin. Topology and its applications, vol. 49 (1993), pp. 1–13. [REVIEW]Klaas Pieter Hart - 2002 - Bulletin of Symbolic Logic 8 (4):554-554.