FILAMENTARY STRUCTURE IN PLANETARY-NEBULAE

[11] BUERGER EG, 1971, THESIS OHIO STATE U

[12] DISTANCES AND DISTRIBUTION OF PLANETARY NEBULAE [J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1971, 22 : 319 - &

[13] AN INVESTIGATION OF EXCITATION CONDITIONS OF [OI] AND [N2] IN PLANETARY NEBULAE [J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1968, 80 (477) : 689 - &

[14] FORMATION OF CONDENSATIONS IN PLANETARY NEBULAE .1. [J]. ASTROPHYSICAL JOURNAL, 1971, 166 (03) : 563 - +

[15] STRUCTURE AND EVOLUTION OF PLANETARY-NEBULAE [J]. ASTROPHYSICAL JOURNAL, 1973, 179 (02) : 495 - 516

[16] CAPRIOTTI ER, 1971, ASTROPHYS LETT COMM, V7, P241

[17] CAPRIOTTI ER, 1972, PRIVATE COMMUNICATIO

[18] CARRANZA G, 1968, IAU34 S, P249

[19] CHOPINET M, 1963, PUB OBS HAUTE PROV, V6, P27

[20] Curtis H.D., 1918, PUBLICATIONS LICK OB, V13, P55

[11] BUERGER EG, 1971, THESIS OHIO STATE U

[12] DISTANCES AND DISTRIBUTION OF PLANETARY NEBULAE [J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES, 1971, 22 : 319 - &

[13] AN INVESTIGATION OF EXCITATION CONDITIONS OF [OI] AND [N2] IN PLANETARY NEBULAE [J]. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF THE PACIFIC, 1968, 80 (477) : 689 - &

[14] FORMATION OF CONDENSATIONS IN PLANETARY NEBULAE .1. [J]. ASTROPHYSICAL JOURNAL, 1971, 166 (03) : 563 - +

[15] STRUCTURE AND EVOLUTION OF PLANETARY-NEBULAE [J]. ASTROPHYSICAL JOURNAL, 1973, 179 (02) : 495 - 516

[16] CAPRIOTTI ER, 1971, ASTROPHYS LETT COMM, V7, P241

[17] CAPRIOTTI ER, 1972, PRIVATE COMMUNICATIO

[18] CARRANZA G, 1968, IAU34 S, P249

[19] CHOPINET M, 1963, PUB OBS HAUTE PROV, V6, P27

[20] Curtis H.D., 1918, PUBLICATIONS LICK OB, V13, P55