Christen, P. (2023). System Metamodelling of Open-Ended Evolution Implemented with Self-Modifying Code. Complex Systems, 32(4), 353–380. https://doi.org/10.25088/ComplexSystems.32.4.353

Inglese, T., Fässler, L., & Christen, P. (2022). I show you how I solved It! - Empowering novice university students to learn programming and mathematics through self-produced videos to potentially teach to their peers. In S.-H. Wang & Y.-D. Zhang (Eds.), Multimedia technology and enhanced learning. 4th EAI International Conference, ICMTEL 2022, virtual event, April 15-16, 2022, proceedings (pp. 260–273). https://doi.org/10.1007/978-3-031-18123-8_20

Christen, P. (2022). Curb your self-modifying code. 2022 IEEE International Conference on Systems, Man, and Cybernetics (SMC). Proceedings, 2607–2612. https://doi.org/10.1109/SMC53654.2022.9945160

Christen, P. (2022). Programming data structures for large-scale desktop simulations of complex systems. 2022 IEEE International Conference on Systems, Man, and Cybernetics (SMC). Proceedings, 3000–3005. https://doi.org/10.1109/SMC53654.2022.9945132

Fix, S., Probst, T., Ruggli, O., Hanne, T., & Christen, P. (2022). Automatic programming as an open-ended evolutionary system. International Journal of Computer Information Systems and Industrial Management Applications, 14, 204–212. https://doi.org/10.26041/fhnw-7460

Christen, P., & Del Fabbro, O. (2022). Philosophy-guided mathematical formalism for complex systems modelling. 2022 IEEE International Conference on Systems, Man, and Cybernetics (SMC). Proceedings, 2229–2236. https://doi.org/10.1109/SMC53654.2022.9945443

Del Fabbro, O., & Christen, P. (2022). Philosophy-guided modelling and implementation of adaptation and control in complex systems. 2022 International Joint Conference on Neural Networks (IJCNN). Conference Proceedings. 2022 International Joint Conference on Neural Networks (IJCNN 2022). https://doi.org/10.1109/IJCNN55064.2022.9892833

Atkins, P. R., Stock, K., Ohs, N., Collins, C. J., Horling, L., Benedikt, S., Degenhart, G., Lippuner, K., Blauth, M., Christen, P., & Müller, R. (2021). Formation dominates resorption with increasing mineralized density and time postfracture in cortical but not trabecular bone: a longitudinal HRpQCT imaging study in the distal radius. JBMR Plus, 5(6). https://doi.org/10.1002/jbm4.10493

Ohs, N., Collins, C. J., Tourolle, D. C., Atkins, P. R., Schroeder, B. J., Blauth, M., Christen, P., & Müller, R. (2021). Automated segmentation of fractured distal radii by 3D geodesic active contouring of in vivo HR-pQCT images. Bone, 147. https://doi.org/10.1016/j.bone.2021.115930

Zhang, J., Wang, Y., Cheng, K.-l., Cheuk, K., Lam, T.-p., Hung, A. L. H., Cheng,  . C.-Y., Qiu, Y., Müller, R., Christen, P., & Lee,  .-W. W. (2021). Association of higher bone turnover with risk of curve progression in adolescent idiopathic scoliosis. Bone, 143. https://doi.org/10.1016/j.bone.2020.115655

Fix, S., Probst, T., Ruggli, O., Hanne, T., & Christen, P. (2021). Open-ended automatic programming through combinatorial evolution. In A. Abraham, N. Gandhi, T. Hanne, T.-P. Hong, T. N. Rios, & W. Ding (Eds.), Intelligent Systems Design and Applications (ISDA 2021) (pp. 1–12). Springer. https://doi.org/10.48550/arXiv.2102.10475

Christen, P. (2021). Modelling and implementing open-ended evolutionary systems (J. Čejková, S. Holler, L. Soros, & O. Witkowski, Eds.). MIT Press. https://doi.org/10.26041/fhnw-7146

Engelhardt, L., Niemeyer, F., Christen, P., Müller, R., Stock, K., Blauth, M., Urban, K., Ignatius, A., & Simon, U. (2021). Simulating metaphyseal fracture healing in the distal radius. Biomechanics, 1(1), 29–42. https://doi.org/10.3390/BIOMECHANICS1010003

Schmidt, P., Lehner, M., & Christen, P. (2020). Enhance reflection skills with social video learning. ETH Learning and Teaching Journal, 2(2), 113–118. https://doi.org/10.16906/lt-eth.v2i2

Christen, P., & Del Fabbro, O. (2019). Cybernetical concepts for cellular automaton and artificial neural network modelling and implementation. 2019 IEEE International Conference on Systems, Man and Cybernetics (SMC), 4124–4130. https://doi.org/10.1109/SMC.2019.8913839

Schulte, F. A., Christen, P., Badilatti, S. D., Parkinson, I., Khosla, S., Goldhahn, J., & Müller, R. (2019). Virtual supersampling as post-processing step preserves the trabecular bone morphometry in human peripheral quantitative computed tomography scans. Plos One, 14(2), 22–48. https://doi.org/10.1371/journal.pone.0212280

Christen, P. (2018). Moving beyond the genome with computer modeling. Personalized Medicine, 15(3), 145–148. https://doi.org/10.2217/pme-2017-0066

Christen, P., Boutroy, S., Ellouz, R., Chapurlat, R., & Rietbergen, B. v. (2018). Least-detectable and age-related local in vivo bone remodelling assessed by time-lapse HR-pQCT. Plos One, 13(1). https://doi.org/10.1371/journal.pone.0191369

Christen, P. (2021). Modelling and implementing open-ended evolutionary systems. The Fourth Workshop on Open-Ended Evolution (OEE4). https://irf.fhnw.ch/handle/11654/43184

Del Fabbro, O., & Christen, P. (2020). The emergence of typical characteristics of complex systems. Conference on Complex Systems (CCS2020). https://irf.fhnw.ch/handle/11654/43183

Christen, P., & Inglese, T. (2020). Virtual teaching of linear algebra with complex systems and artificial intelligence case studies. Tenth International Conference on Complex Systems (ICCS 2020). https://irf.fhnw.ch/handle/11654/42734