Future mobile networks: ad-hoc access based on online payment with smartcards. - Heiko Knospe; Scarlet Schwiderski-Grosche (PIMRC, 2002)

Sichere WLAN-Netze für Campus-Anwendungen und für öffentliche HotSpots. - Gerhard Kadel; Dieter Busch; Heiko Knospe (DFN-Arbeitstagung über Kommunikationsnetze, 2003)

RFID security. - Heiko Knospe; Hartmut Pohl (Inf. Secur. Tech. Rep., 2004)

Analysis of Spectral Parameters of Audio Signals for the Identification of Spam Over IP Telephony. - Christoph Pörschmann; Heiko Knospe (CEAS, 2008)

Analyse spektraler Parameter des Audiosignals zur Identifikation und Abwehr von Telefon-SPAM. - Christoph Pörschmann; Heiko Knospe (Sicherheit, 2008)

Content-Based Detection and Prevention of Spam over IP Telephony - System Design, Prototype and First Results. - Dirk Lentzen; Gary Grutzek; Heiko Knospe; Christoph Pörschmann (ICC, 2011)

Perceptual Hashing for the Identification of Telephone Speech. - Gary Grutzek; Julian Strobl; Bernhard Mainka; Frank Kurth; Christoph Pörschmann; Heiko Knospe (ITG Conference on Speech Communication, 2012)

An efficient search method for the content-based identification of telephone-SPAM. - Julian Strobl; Bernhard Mainka; Gary Grutzek; Heiko Knospe (ICC, 2012)

Privacy-enhanced Perceptual Hashing of Audio Data. - Heiko Knospe (SECRYPT, 2013)

On Iwasawa 𝜆-invariants for abelian number fields and random matrix heuristics. - Daniel Delbourgo; Heiko Knospe (Math. Comput., 2023)