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Title:

Upper limits to the detection of ammonia from protoplanetary disks around HL Tauri and L1551-IRS 5

Date:

1993

Authors:

Gomez, J.F., Torrelles, J.M., Ho, P.T.P., Rodriguez, L.F. & Canto, J., 1993, ApJ, 414, 333

Objects in this reference:

HL Tau

L1551 IRS 5 (HBC 393)