CK 1345
Disquisitio Inauguralis Physico Medico-Legalis, De Submersorum Morte / Quam ... Sub Praesidio ... Jacobi Smith ... exposuit Author & Respondens Petrus Paulus Helffer. -- Vetero-Pragae : in Aula Regia, Typis Josephi Antonii Schilhart, 1727.
Helffer z Helfferstreu, Petr Pavel, 1696-1770. Schilhart, Josef Antonín, -1727. Arcibiskupská tiskárna (Praha, Česko)