Dirac, P. A. M. (January 1927). “The physical interpretation of the quantum dynamics”. 《Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character》 (영어) 113 (765): 621–641. Bibcode:1927RSPSA.113..621D. doi:10.1098/rspa.1927.0012. ISSN0950-1207.
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Dirac, P. A. M. (January 1927). “The physical interpretation of the quantum dynamics”. 《Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character》 (영어) 113 (765): 621–641. Bibcode:1927RSPSA.113..621D. doi:10.1098/rspa.1927.0012. ISSN0950-1207.
Driggers 2003, 2321쪽 괄호 없는 하버드 인용 error: 대상 없음: CITEREFDriggers2003 (help) See also Bracewell 1986, Chapter 5 괄호 없는 하버드 인용 error: 대상 없음: CITEREFBracewell1986 (help) for a different interpretation. Other conventions for the assigning the value of the Heaviside function at zero exist, and some of these are not consistent with what follows.
Lang 1997. harv error: 대상 없음: CITEREFLang1997 (help)
In the terminology of Lang (1997) harvtxt error: 대상 없음: CITEREFLang1997 (help), the Fejér kernel is a Dirac sequence, whereas the Dirichlet kernel is not.
Dirac, P. A. M. (January 1927). “The physical interpretation of the quantum dynamics”. 《Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character》 (영어) 113 (765): 621–641. Bibcode:1927RSPSA.113..621D. doi:10.1098/rspa.1927.0012. ISSN0950-1207.