References

• Altenhoff W.J., Downes D., Pauls T., Schraml J., 1978, A&AS 35, 23 NASA ADS
• Becker R.H., White R.L., Helfand D.J., Zoonematkermani S., 1994, ApJS 91, 347 NASA ADS
• Beichman C.A., Neugebauer G., Habing H.J., Clegg P.E., Chester T.J., 1988, IRAS Catalogs and Atlases. GPO, Washington, DC
• Cesaroni R., Felli M., Walmsley C.M., 1999, A&AS 136, 333 NASA ADS
• Codella C., Felli M., Natale V., 1994, A&A 284, 233 NASA ADS
• Condon J.J., Cotton W.D., Greisen E.W., et al., 1998, ApJ 115, 1693
• Eder J., Lewis B.M., Terzian Y., 1988, ApJS 66, 183 NASA ADS
• Epchtein N., 1998, IAU Symp. 191, p. 102
• Fomalont E.B., Windhorst R.A., Kristian J.A., Kellerman K.I., 1991, AJ 102, 1258 NASA ADS
• Harmon B.A., Deal K.J., Paciesas W.S., et al., 1997, ApJ 477, L85 NASA ADS
• Kurtz S., Churchwell E., Wood D.O.S., 1994, ApJS 91, 659 NASA ADS
• Kurtz S., Cesaroni R., Hofner P., Churchwell E., Walmsley C.M., 1999a, in "Protostars & Planets IV'', Mannings V., Boss A., Russel S. (eds.). the Arizona University press (in press)
• Kurtz S., Watson A.M., Hofner P., Otte B., 1999b, ApJ 514, 232 NASA ADS
• Mirabel I.F., Rodríguez L.F., 1994, Nat 371, 46 NASA ADS
• Omont A., Blommaert J., 1997, in "The impact of large-scale Near-IR Sky Surveys'', Garzón P. et al. (ed.). Kluwer, p. 81
• Pérault M., Omont A., Simon G., Séguin P., Ojha D., et al., 1996, A&A 315, L165 NASA ADS
• Pottasch S.R., Bignell C., Olling R., Zijlstra A.A., 1988, A&A 205, 248 NASA ADS
• Ramesh B., Sridharan T.K., 1997, MNRAS 284, 1001 NASA ADS
• Rodríguez L.F., Mirabel I.F., 1999, ApJ 511, 398 NASA ADS
• Testi L., Felli M., Pérault M., et al., 1997, A&A 318, L13 NASA ADS
• Testi L., Felli M., Persi P., Roth M., 1998, A&A 329, 233 NASA ADS
• Testi L., Hofner P., Kurtz S., Rupen M., Cesaroni R., 1999 (in preparation)
• Tofani G., Felli M., Taylor G.B., Hunter T.R., 1995, A&AS 112, 299 NASA ADS
• White R.L., Becker R.H., Helfand D.J., 1991, ApJ 371, 148 NASA ADS
• Windhorst R.A., Fomalont E.B., Partridge R.B., Lowenthal J.D., 1993, ApJ 405, 498 NASA ADS
• Wood D.O.S., Churchwell E., 1989a, ApJ 340, 265 NASA ADS
• Wood D.O.S., Churchwell E., 1989b, ApJS 69, 831 NASA ADS
• Zoonematkermani S., Helfand D.J., Becker R.H., White R.L., Perley R.A., 1990, ApJS 74, 181 NASA ADS