Panero,J.L.; Funk,V.A. "The value of sampling anomalous taxa in phylogenetic studies: Major clades of the Asteraceae revealed". Molecular Phylogenetics and Evolution. 47 (2). 2008: 757–782. doi:10.1016/j.ympev.2008.02.011. PMID18375151.
Panero, J.L.; Funk, V.A. "The value of sampling anomalous taxa in phylogenetic studies: major clades of the Asteraceae revealed". Molecular Phylogenetics and Evolution. 22 (1). 2002: 43–52. doi:10.1006/mpev.2001.1043. PMID11884147.
Panero,J.L.; Funk,V.A. "The value of sampling anomalous taxa in phylogenetic studies: Major clades of the Asteraceae revealed". Molecular Phylogenetics and Evolution. 47 (2). 2008: 757–782. doi:10.1016/j.ympev.2008.02.011. PMID18375151.
Panero, J.L.; Funk, V.A. "The value of sampling anomalous taxa in phylogenetic studies: major clades of the Asteraceae revealed". Molecular Phylogenetics and Evolution. 22 (1). 2002: 43–52. doi:10.1006/mpev.2001.1043. PMID11884147.