Bibcode
                                    
                            Garcia-Lario, P.; Manchado, A.; Suso, S. R.; Pottasch, S. R.; Olling, R.
    Bibliographical reference
                                    Astronomy and Astrophysics Supplement Series (ISSN 0365-0138), vol. 82, no. 3, March 1990, p. 497-512.
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                        3
            
                        1990
            
  Citations
                                    64
                            Refereed citations
                                    59
                            Description
                                    Near-IR standard photometry (J, H, K, L and M bands) of 38 IRAS sources
with FIR colors similar to those of known planetary nebulae is
presented. They are classified according to their IR global energy
distribution from 1 to 100 microns. Although it is not possible to reach
a definite conclusion about their evolutionary stage, there are clear
indications that most of them are in the transition phase from AGB and
post-AGB stars to protoplanetary and planetary nebulae.