1. Kuumahierreprosessin dynaaminen malli;Aarni,1977
2. On numerical methods for solving first order hyperbolic partial differential equation systems;Aarni,1977
3. Kuumahierreprosessin simuloinnista ja toi-minnan optimoinnista (Simulation and optimization of the thermomechanical pulping process);Aarni;Automation Days -78,1978
4. On the measurement of temperature and pressure in the refining zone of an open discharge refiner;Atack,1975
5. Frequency and temperature in chip refining;Becker;Paperi ja Puu 59,1977