A brief paper by Helena Lorenzova, giving an overview of Bolzano's teachings. From the Paideia Project.

Biography from MacTutor History of Mathematics Archive.

Brief biography from the Interactive Real Analysis site at Seton Hall University.

Association of scholars interested in the works and legacy of Bolzano. Organizational, membership and contact information.

From Salzburg University.

Excerpts from the works by Bernard Bolzano and an extended bibliography of studies on his work