Authors: Milligan, K Lanteri-Minet, M Borchert, K Helmers, H Donald, R Kress, HG Adriaensen, H Moulin, D Jarvimaki, V Haazen, L

Citation: K. Milligan et al., Evaluation of long-term efficacy and safety of transdermal fentanyl in thetreatment of chronic noncancer pain, J PAIN, 2(4), 2001, pp. 197-204

Authors: Leroy, A Helmers, H Thedrez, B Hubert, S Peloso, P Kerboeuf, S Duan, GH Jacquet, J Heck, W Lablonde, L Boitel, M

Citation: A. Leroy et al., Low-cost wavelength stabilised plug and play lasers for WDM systems in future local networks, ELECTR LETT, 37(16), 2001, pp. 1012-1014

Authors: Brozeit, A Burke, J Helmers, H

Citation: A. Brozeit et al., Active phase stabilisation in electronic speckle pattern interferometry without additional optical components, OPT COMMUN, 173(1-6), 2000, pp. 95-100

Authors: Burke, J Helmers, H

Citation: J. Burke et H. Helmers, Matched data storage in ESPI by combination of spatial phase shifting withtemporal phase unwrapping, OPT LASER T, 32(4), 2000, pp. 235-240

Authors: Helmers, H

Citation: H. Helmers, CAQ informs internal and external customers on the actual quality situation, KAUT GUM KU, 52(11), 1999, pp. 748

Authors: Brozeit, A Burke, J Helmers, H Sagehorn, H Schuh, R

Citation: A. Brozeit et al., Noise reduction in electronic speckle pattern interferometry fringes by merging orthogonally polarised speckle fields, OPT LASER T, 30(5), 1998, pp. 325-329