APA 6th Edition Novak, I. (1995). Substituent Effects in Thiophenes. Croatica Chemica Acta, 68 (2), 399-402. Preuzeto s https://hrcak.srce.hr/136761
MLA 8th Edition Novak, Igor. "Substituent Effects in Thiophenes." Croatica Chemica Acta, vol. 68, br. 2, 1995, str. 399-402. https://hrcak.srce.hr/136761. Citirano 26.02.2021.
Chicago 17th Edition Novak, Igor. "Substituent Effects in Thiophenes." Croatica Chemica Acta 68, br. 2 (1995): 399-402. https://hrcak.srce.hr/136761
Harvard Novak, I. (1995). 'Substituent Effects in Thiophenes', Croatica Chemica Acta, 68(2), str. 399-402. Preuzeto s: https://hrcak.srce.hr/136761 (Datum pristupa: 26.02.2021.)
Vancouver Novak I. Substituent Effects in Thiophenes. Croatica Chemica Acta [Internet]. 1995 [pristupljeno 26.02.2021.];68(2):399-402. Dostupno na: https://hrcak.srce.hr/136761
IEEE I. Novak, "Substituent Effects in Thiophenes", Croatica Chemica Acta, vol.68, br. 2, str. 399-402, 1995. [Online]. Dostupno na: https://hrcak.srce.hr/136761. [Citirano: 26.02.2021.]
Sažetak He I and He II photoelectron spectra (UPS) of 2-acetyl and 2-cyano thiophene have been measured. The electronic strucutre of the title compounds and, in particular, the effect of substituents on the thiophene % orbitals is discussed on the basis of band widths, He I/He II intensities and semi-empirical MO calculations. Definite assignments are given for the two molecules, thus completing the previous work. The available results on 2- and 3-monosubstituted thiophenes have been compiled and rationalized.