Fink, J.; Crecelius, G.; Ritsko, J.J.; Stamm, M.; Freund, H.-J.; Gonska, H.: π ELECTRON DELOCALIZATION IN POLY-(p-PHENYLENE) (PPP), POLYPHENYLENE SULFIDE (PPS) AND POLYPHENYLENE OXIDE ( PPO) AND AsF₅ DOPING OF PPP. Journal de Physique. Colloque 44 (C3), pp. C3-741 - C3-744 (1983)

Freund, H.-J.; Eberhardt, W.; Heskett, D.; Plummer, E. W.: Influence of Multielectron Excitations on the Band Structure of Adsorbate Overlayers. Physical Review Letters 50 (10), pp. 768 - 771 (1983)

Freund, H.-J.; Greuter, F.; Heskett, D.; Plummer, E. W.: Chemisorption of CO on Co(0001). II. Multielectron excitations. Physical Review B 28 (4), pp. 1727 - 1733 (1983)

Freund, H.-J.; Pulm, H.; Dick, B.; Lange, R.: X-ray photoemission study of satellite structure accompanying core ionization from coordinated nitrogen. Chemical Physics 81 (1-2), pp. 99 - 112 (1983)

Greuter, F.; Heskett, D.; Plummer, E. W.; Freund, H.-J.: Chemisorption of CO on Co(0001). Structure and electronic properties. Physical Review B 27 (12), pp. 7117 - 7135 (1983)

Pantelides, S. T.; Ivanov, I.; Scheffler, M.; Vigneron, J. P.: Multivacancies, interstitials, and self-interstitial migration in Si. Physica B 116, pp. 18 - 27 (1983)

Vigneron, J. P.; Scheffler, M.; Pantelides, S. T.: Electronic structure of self-interstitials and sp-bonded interstitial impurities in semiconductors. Physica B/C 117/118, pp. 137 - 139 (1983)

Berndt, W.; Hora, R.; Scheffler, M.: A LEED analysis of c(2x2) sulphur on Pd(100). Surface Science 117 (1-3), pp. 188 - 195 (1982)

Bernholc, J.; Lipari, N. O.; Pantelides, S. T.; Scheffler, M.: Electronic structure of deep sp-bonded impurities in silicon. Physical Review B 26 (10), pp. 5706 - 5715 (1982)

Bigelow, R. W.; Freund, H.-J.: The core-hole excitation spectrum of benzene: A symmetry-adapted CNDO/S equivalent-core study including "spin-symmetry breaking" configuration. The Journal of Chemical Physics 77 (11), pp. 5552 - 5561 (1982)

Heskett, D.; Greuter, F.; Freund, H.-J.; Plummer, E. W.: Summary Abstract: Angle‐resolved photoemission study of CO/Co(0001). Journal of Vacuum Science and Technology 20 (3), pp. 623 - 624 (1982)

Horn, K.; Dinardo, J.; Eberhardt, W.; Freund, H.-J.; Plummer, E.W.: The adsorption of N₂: Chemisorbed on Ni(110) and physisorbed on Pd(111). Surface Science 118 (3), pp. 465 - 495 (1982)

Scheffler, M.; Vigneron, J. P.; Bachelet, G. B.: Tractable approach for calculating lattice distortions around simple defects in semiconductors: Application to the single donor Ge in GaP. Physical Review Letters 49, pp. 1765 - 1768 (1982)

Schirmer, O.; Scheffler, M.: Determination of deep donor binding energies from their g-values. Journal of Physics C: Solid State Physics 15, pp. L645 - L650 (1982)

Freund, H.-J.; Bigelow, R. W.: Shake-up phenomena in D⁺-Ar-A^- structures: A CNDO/S equivalent-core study on N,N-dimethyl-p-nitroaniline in the vapor and condensed phases. Chemical Physics 55 (3), pp. 407 - 427 (1981)

Freund, H.-J.; Plummer, E. W.: Explanation of the satellite structure observed in the photoemission spectra of coordinated CO. Physical Review B 23 (10), pp. 4859 - 4878 (1981)

Freund, H.-J.; Plummer, E. W.; Salaneck, W. R.: Summary Abstract: An XPS study of "intensity borrowing" in core ionizations of CO upon coordination to transition metal atoms. Journal of Vacuum Science and Technology 18 (2), pp. 464 - 465 (1981)

Freund, H.-J.; Plummer, E. W.; Salaneck, W. R.; Bigelow, R. W.: An XPS study of intensity borrowing in core ionization of free and coordinated CO. The Journal of Chemical Physics 75 (9), pp. 4275 - 4284 (1981)

Saddei, D.; Freund, H.-J.; Hohlneicher, G.: Zur elektronischen struktur von trans-chloro-methylcarbin-tetracarbonyl-chrom ClCr(CO)₄CCH₃. Journal of Organometallic Chemistry 216 (2), pp. 235 - 243 (1981)

Saddei, D.; Freund, H.-J.; Hohlneicher, G.: Calculation of transition metal compounds using an extension of the CNDO formalism. V. many body effects in the inner valence shell photoionization spectra of free and coordinated carbon monoxide. Chemical Physics 55 (3), pp. 339 - 354 (1981)