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	1.	The application of Laplacian analysis in the recording of half-field pattern-onset evoked potentials. [electronic resource] by Riemslag, F C Beers, A P Spekreijse, H Producer: 19920921 In: Documenta ophthalmologica. Advances in ophthalmology vol. 80 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	2.	Presbyopia and velocity of sound in the lens. [electronic resource] by Beers, A P Van der Heijde, G L Producer: 19940829 In: Optometry and vision science : official publication of the American Academy of Optometry vol. 71 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	3.	Analysis of accommodation function with ultrasonography. [electronic resource] by Beers, A P van der Heijde, G L Producer: 19970807 In: Documenta ophthalmologica. Advances in ophthalmology vol. 92 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	4.	Visual evoked potential estimation of visual activity with a Laplacian derivation. [electronic resource] by Beers, A P Riemslag, F C Spekreijse, H Producer: 19920826 In: Documenta ophthalmologica. Advances in ophthalmology vol. 79 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	5.	Age-related changes in the accommodation mechanism. [electronic resource] by Beers, A P van der Heijde, G L Producer: 19961108 In: Optometry and vision science : official publication of the American Academy of Optometry vol. 73 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	6.	In vivo determination of the biomechanical properties of the component elements of the accommodation mechanism. [electronic resource] by Beers, A P Van Der Heijde, G L Producer: 19941229 In: Vision research vol. 34 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	7.	Microfluctuations of steady-state accommodation measured with ultrasonography. [electronic resource] by van der Heijde, G L Beers, A P Dubbelman, M Producer: 19970122 In: Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists) vol. 16 Online resources: Available from publisher's website Availability: No items available. Save to lists Add to cart (remove)
	8.	[Aging of the crystalline lens and presbyopia]. [electronic resource] by Beers, A P van der Heijde, G L Dubbelman, M Producer: 19981030 In: Tijdschrift voor gerontologie en geriatrie vol. 29 Availability: No items available. Save to lists Add to cart (remove)