@article {174,
	title = {Systematics and geographic history of the genus Pyrgus in the Palearctic Region (Lep. Hesp.)},
	journal = {Tijdschr. Ent.Tijdschr. Ent.},
	volume = {115},
	year = {1972},
	pages = {1-121},
	keywords = {Pyrgus},
	author = {Jong R. de}
}
@article {175,
	title = {Systematics and evolution of the Palearctic Spialia species  (Lep. Hesp.)},
	journal = {Tijdschr. Ent.Tijdschr. Ent.},
	volume = {117},
	year = {1974},
	pages = {225-271},
	keywords = {Spialia},
	author = {Jong R. de}
}
@article {176,
	title = {Notes on the genus Carcharodus (Lepidoptera, Herperiidae)},
	journal = {Zool. Meded. Rijksmus. Nat. Hist. LeidenZool. Meded. Rijksmus. Nat. Hist. Leiden},
	volume = {48},
	number = {1},
	year = {1974},
	pages = {1-9},
	keywords = {Carcharodus},
	author = {Jong R. de}
}
@article {178,
	title = {Superspecies Pyrgus malvae in the East Mediterranean, with notes on Phylogenetic and biological relationships},
	journal = {Zool. Meded. Rijksmus. Nat. Hist. LeidenZool. Meded. Rijksmus. Nat. Hist. Leiden},
	volume = {61},
	year = {1987},
	pages = {483-500},
	keywords = {Pyrgus malvae},
	author = {Jong R. de}
}
