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[11] CRYSTAL STRUCTURE OF BENZO[1,2 - 4,5]DICYCLOBUTENE [J]. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY, 1969, B 25 : 978 - &

[12] CRYSTALLOGRAPHIC DATA FOR SOME CYCLOBUTENE DERIVATIVES [J]. ACTA CRYSTALLOGRAPHICA, 1964, 17 (05): : 610 - &

[13] SMALL RING COMPOUNDS .24. MOLECULAR ORBITAL CALCULATIONS OF THE DELOCALIZATION ENERGIES OF SOME SMALL-RING SYSTEMS [J]. JOURNAL OF ORGANIC CHEMISTRY, 1959, 24 (09) : 1336 - 1338

[14] COHERENT X-RAY SCATTERING FOR HYDROGEN ATOM IN HYDROGEN MOLECULE [J]. JOURNAL OF CHEMICAL PHYSICS, 1965, 42 (09) : 3175 - &

[15] Wilson A. J. C., 1942, NATURE, V150, P152

[16] 1958, 11 CHEM SOC SPEC PUB

[17] 1962, INT TABLES XRAY CRYS, V3

[18] 1965, 18 CHEM SOC SPEC PUB

[11] CRYSTAL STRUCTURE OF BENZO[1,2 - 4,5]DICYCLOBUTENE [J]. ACTA CRYSTALLOGRAPHICA SECTION B-STRUCTURAL CRYSTALLOGRAPHY AND CRYSTAL CHEMISTRY, 1969, B 25 : 978 - &

[12] CRYSTALLOGRAPHIC DATA FOR SOME CYCLOBUTENE DERIVATIVES [J]. ACTA CRYSTALLOGRAPHICA, 1964, 17 (05): : 610 - &

[13] SMALL RING COMPOUNDS .24. MOLECULAR ORBITAL CALCULATIONS OF THE DELOCALIZATION ENERGIES OF SOME SMALL-RING SYSTEMS [J]. JOURNAL OF ORGANIC CHEMISTRY, 1959, 24 (09) : 1336 - 1338

[14] COHERENT X-RAY SCATTERING FOR HYDROGEN ATOM IN HYDROGEN MOLECULE [J]. JOURNAL OF CHEMICAL PHYSICS, 1965, 42 (09) : 3175 - &

[15] Wilson A. J. C., 1942, NATURE, V150, P152

[16] 1958, 11 CHEM SOC SPEC PUB

[17] 1962, INT TABLES XRAY CRYS, V3

[18] 1965, 18 CHEM SOC SPEC PUB