| ALC89 | Alcolea et al. (1989) |
| ALC90 | Alcolea et al. (1990) |
| ALC92 | Alcolea & Bujarrabal (1992) |
| ALL89 | Allen et al. (1989) |
| AMA22 | Amada et al. (2022) |
| AND22 | Andrews et al. (2022) |
| BAR89 | Barcia et al. (1989) |
| BIE94 | Bieging & Latter (1994) |
| BIE98 | Bieging et al. (1998) |
| BOB04 | Boboltz & Claussen (2004) |
| BUJ92 | Bujarrabal et al. (1992) |
| BUJ94 | Bujarrabal et al. (1994) |
| BUJ96 | Bujarrabal et al. (1996) |
| CER91 | Cernicharo et al. (1991) |
| CER92 | Cernicharo & Bujarrabal (1992) |
| CER93 | Cernicharo et al. (1993) |
| CER97 | Cernicharo et al. (1997) |
| CHO95 | Cho et al. (1995) |
| CHO96 | Cho et al. (1996) |
| CHO98A | Cho et al. (1998) |
| CHO98B | Cho & Ukita (1998) |
| CHO07 | Cho et al. (2007) |
| CHO09 | Cho et al. (2009) |
| CHO10 | Cho & Kim (2010) |
| CHO12 | Cho & Kim (2012) |
| CHO17 | Cho et al. (2017) |
| DEA07 | Deacon et al. (2007) |
| DEG90 | Deguchi et al. (1990) |
| DEG99 | Deguchi et al. (1999) |
| DEG00A | Deguchi et al. (2000) |
| DEG00B | Deguchi et al. (2000) |
| DEG01 | Deguchi et al. (2001) |
| DEG04A | Deguchi et al. (2004) |
| DEG04B | Deguchi et al. (2004) |
| DEG04C | Deguchi et al. (2004) |
| DEG05 | Deguchi et al. (2005) |
| DEG07A | Deguchi et al. (2007) |
| DEG07B | Deguchi et al. (2007) |
| DEG10A | Deguchi et al. (2010) |
| DEG10B | Deguchi et al. (2010) |
| DEG12 | Deguchi et al. (2012) |
| DIK21 | Dike et al. (2021) |
| ENG89 | Engels & Heske (1989) |
| FOK12 | Fok et al. (2012) |
| FUJ06 | Fujii et al. (2006) |
| GOM90 | Gomez et al. (1990) |
| GON98 | González-Alfonso et al. (1998) |
| GON03 | González Delgado et al. (2003) |
| HAI90 | Haikala (1990) |
| HAI94 | Haikala et al. (1994) |
| HAL90A | Hall et al. (1990a) |
| HAL90B | Hall et al. (1990b) |
| HER98 | Herpin et al. (1998) |
| HER06 | Herpin et al. (2006) |
| HOL90 | Hollis et al. (1990) |
| IMA99 | Imai et al. (1999) |
| ITA01 | Ita et al. (2001) |
| IZU94 | Izumiura et al. (1994) |
| IZU95A | Izumiura et al. (1995) |
| IZU95B | Izumiura et al. (1995) |
| IZU99 | Izumiura et al. (1999) |
| JEW91 | Jewell et al. (1991) |
| JIA96 | Jiang et al. (1996) |
| JIA99 | Jiang et al. (1999) |
| JOR15 | Jordan et al. (2015) |
| KIM10 | Kim et al. (2010) |
| KIM13 | Kim et al. (2013) |
| LEB90 | Le Bertre & Nyman (1990) |
| LEE21 | Lee et al. (2021) |
| LEP78 | Lépine et al. (1978) |
| LEW20 | Lewis et al. (2020) |
| LI10 | Li et al. (2010) |
| LID91 | Lindqvist et al. (1991) |
| LIU17 | Liu et al. (2017) |
| MAT05 | Matsunaga et al. (2005) |
| MAT20 | Matsuno et al. (2020) |
| MCI93 | McIntosh & Predmore (1993) |
| MCI94 | McIntosh et al. (1994) |
| MCI06A | McIntosh (2006) |
| MES02 | Messineo et al. (2002) |
| MES18 | Messineo et al. (2018) |
| MES20 | Messineo et al. (2020) |
| MIY01 | Miyazaki et al. (2001) |
| NAKA93 | Nakada et al. (1993) |
| NAK00 | Nakashima & Deguchi (2000) |
| NAK03A | Nakashima & Deguchi (2003) |
| NAK03B | Nakashima & Deguchi (2003) |
| NAK06 | Nakashima & Deguchi (2006) |
| NAK07 | Nakashima & Deguchi (2007) |
| NYM93 | Nyman et al. (1993) |
| NYM98 | Nyman et al. (1998) |
| OLO98 | Olofsson et al. (1998) |
| PAR98 | Pardo et al. (1998) |
| QUI16 | Quintana-Lacaci et al. (2016) |
| RAM09 | Ramstedt et al. (2009) |
| RIZ21 | Rizzo et al. (2021) |
| SCH95 | Schwarz et al. (1995) |
| SHI97 | Shiki et al. (1997) |
| SJO02 | Sjouwerman et al. (2002) |
| STR18 | Stroh et al. (2018) |
| STR19 | Stroh et al. (2019) |
| TAK94 | Takaba et al. (1994) |
| VER12 | Verheyen et al. (2012) |
| VIC16 | de Vincente et al. (2016) |
| WIN02 | Winters et al. (2002) |
| WU18 | Wu et al. (2018) |
| YOO14 | Yoon et al. (2014) |