@article {1068,
	title = {An important ally in the control of the San Jos{\'e} scale: Prospaltella perniciosi },
	journal = {Agricoltura, Roma},
	volume = {1},
	number = {8},
	year = {1962},
	pages = {59-61},
	author = {Mathys, G. and Guignard, E.}
}
@article {1069,
	title = {A study of the effectiveness, in Switzerland, of Prospaltella perniciosi , a parasite of the San Jos{\'e} scale},
	journal = {Entomophaga},
	volume = {10},
	number = {3},
	year = {1965},
	month = {7-Sep-65},
	pages = {193-220},
	author = {Mathys, G. and Guignard, E.}
}
@article {1070,
	title = {Lessons learnt during nine years{\textquoteright} work with Prospaltella pernciosi (Tow.), a parasite of the San Jos{\'e} scale ( Quadraspidiotus pernciosus (Comst.))},
	journal = {Entomophaga},
	volume = {12},
	number = {3},
	year = {1967},
	month = {10-May-67},
	pages = {212-222},
	author = {Mathys, G. and Guignard, E.}
}
@article {1071,
	title = {Some aspects of the biological control of the San Jos{\'e} scale ( Quadraspidiotus perniciosus Comst.) by means of the aphelinid Prospaltella pernciosi },
	journal = {Entomophaga},
	volume = {12},
	number = {3},
	year = {1967},
	month = {10-May-67},
	pages = {223-234},
	author = {Mathys, G. and Guignard, E.}
}
