OBSERVATIONAL CONSTRAINTS ON DRIVING MECHANISMS FOR SPIRAL DENSITY WAVES

[41] CARRANZA GJ, 1974, OBSERVATORY, V94, P7

[42] STUDIES OF EXTRAGALACTIC NEBULAE .I. ROTATION CURVE OF NGC 4736 [J]. ASTROPHYSICAL JOURNAL, 1967, 147 (02) : 407 - &

[43] STUDIES OF EXTRAGALACTIC NEBULAE .4. PRELIMINARY SPECTROSCOPIC OBSERVATIONS OF NGC 4258 [J]. ASTROPHYSICAL JOURNAL, 1967, 149 (3P1) : 487 - +

[44] COURTES G, 1961, CR HEBD ACAD SCI, V253, P218

[45] CRILLON R, 1969, ASTRON ASTROPHYS, V2, P1

[46] de Vaucouleurs G., 1963, ASTROPHYS J, V137, P363

[47] de Vaucouleurs G., 1959, HDB PHYSIK, V53, P275

[48] Deharveng J. M., 1975, Astronomy and Astrophysics Supplement Series, V19, P351

[49] DEHARVENG JM, 1970, ASTRON ASTROPHYS, V7, P210

[50] DEHARVENG JM, 1975, ASTRON ASTROPHYS, V38, P15

[41] CARRANZA GJ, 1974, OBSERVATORY, V94, P7

[42] STUDIES OF EXTRAGALACTIC NEBULAE .I. ROTATION CURVE OF NGC 4736 [J]. ASTROPHYSICAL JOURNAL, 1967, 147 (02) : 407 - &

[43] STUDIES OF EXTRAGALACTIC NEBULAE .4. PRELIMINARY SPECTROSCOPIC OBSERVATIONS OF NGC 4258 [J]. ASTROPHYSICAL JOURNAL, 1967, 149 (3P1) : 487 - +

[44] COURTES G, 1961, CR HEBD ACAD SCI, V253, P218

[45] CRILLON R, 1969, ASTRON ASTROPHYS, V2, P1

[46] de Vaucouleurs G., 1963, ASTROPHYS J, V137, P363

[47] de Vaucouleurs G., 1959, HDB PHYSIK, V53, P275

[48] Deharveng J. M., 1975, Astronomy and Astrophysics Supplement Series, V19, P351

[49] DEHARVENG JM, 1970, ASTRON ASTROPHYS, V7, P210

[50] DEHARVENG JM, 1975, ASTRON ASTROPHYS, V38, P15