1. H.E. Kallmann: Transverse Filters, Proc. IRE, 28 (1940) pp. 302–310.
2. C.S. Hartmann: Weighting Interdigital Surface Wave Transducers by Selective Withdrawal of Electrodes, IEEE Ultrason. Symp. (1973) pp. 423–426.
3. A. Rønnekleiv, H. Skeie and H. Hanebrekke: Design Problems in Surface Acoustic Filters, IEE International Specialist Seminor on Component Performance and Systems Applications of Surface Acoustic Wave Devices (1973) pp. 141151.
4. K.M. Lakin, D.W.T. Mih and R.M. Tarr: A New Interdigital Electrode Transducer Geometry, IEEE Trans. Microwave Theory and Tech., MTT-22 (1974) pp. 763.
5. M. Feldmann and J. Henaff: Design of SAW Filter with Minimum Phase Response, Proc. IEEE Ultrason. Symp. (1978) pp. 720–723.