Modelling two-phase flow for control design in oil well drilling. - Gerhard Nygaard; Geir Nævdal (CCA, 2005)

On modeling and observer design of fluid flow dynamics for petroleum drilling operations. - Hardy B. Siahaan; Gerhard Nygaard (CDC, 2008)

Evaluating control designs for co-ordinating pump rates and choke valve during managed pressure drilling operations. - Øyvind Breyholtz; Gerhard Nygaard; John-Morten Godhavn; Erlend H. Vefring (CCA/ISIC, 2009)

Automatic control of managed pressure drilling. - Øyvind Breyholtz; Gerhard Nygaard; Michael Nikolaou (ACC, 2010)

Adaptive observer for kick detection and switched control for bottomhole pressure regulation and kick attenuation during managed pressure drilling. - Jing Zhou; Gerhard Nygaard; John-Morten Godhavn; Øyvind Breyholtz; Erlend H. Vefring (ACC, 2010)

On a Novel, Simplified Model Framework Describing Ascorbic Acid Concentration Dynamics. - Gerhard Nygaard (EMBC, 2019)