Real-time implementation of spectral subtraction algorithm for suppression of acoustic noise in speech. - Vratislav Davidek; Pavel Sovka; Jiri Sika (EUROSPEECH, 1995)

Multi-channel noise reduction using wavelet filter bank. - Jiri Sika; Vratislav Davidek (EUROSPEECH, 1997)

Design of state digital filters. - Bohumil Psenicka; Francisco J. García-Ugalde; Jesus Savage; S. Herrera-Garcia; Vratislav Davidek (IEEE Trans. Signal Process., 1998)