Heart murmurs in infants and children. Riemenschneider TA. J Fam Pract. 1978 Jun;6(1):151-5. PMID: 621473
[Automatic classification of phonocardiogram--processed by linear predictive analysis (author's transl)]. Iwata A, Ogawa N, Ishii N, Suzumura N, Ikegaya K, Yokoi M, Uozumi Z. Iyodenshi To Seitai Kogaku. 1979 Jun 30;17(3):185-92. PMID: 537228
[Dynamic correlations of cardiac murmurs]. Luisada AA. Coeur Med Interne. 1972 Jan-Mar;11(1):5-11. PMID: 5014852
[Spectral phonocardiography in the differential diagnosis of systolic heart murmurs in children]. Kochkin VI, Liubavin IaG, Zverev VA, Lozovskaia LI, Sigal MB. Pediatriia. 1978 Feb;(2):9-12. PMID: 634743
The wavelet transform and its applications to phonocardiogram signal analysis. Khadra L, Matalgah M, el-Asir B, Mawagdeh S. Med Inform (Lond). 1991 Jul-Sep;16(3):271-7. doi: 10.3109/14639239109025301. PMID: 1758216
Continuous spectral analysis of heart murmurs for evaluating stenotic cardiac lesions. Donnerstein RL. Am J Cardiol. 1989 Sep 15;64(10):625-30. doi: 10.1016/0002-9149(89)90491-8. PMID: 2782254
Musical murmurs: an echo-phonocardiographic study. Venkataraman K, Siegel R, Kim SJ, Allen JW. Am J Cardiol. 1978 May 01;41(5):952-5. doi: 10.1016/0002-9149(78)90739-7. PMID: 645605
Spectral analysis of second heart sound in normal children by selective linear prediction coding. Nandagopal D, Mazumdar J, Bogner RE, Goldblatt E. Med Biol Eng Comput. 1984 May;22(3):229-39. doi: 10.1007/BF02442748. PMID: 6738129