2010, Eshag...
2007, Elsa Andersen: Solar Combi Systems, R-156
2007, Alexander Thür: Compact solar combisystem - high efficiency by minimizing temperatures, R-160
2004, Søren Knudsen: Investigation and optimisation of heat storage tanks for low-flow SDHW systems, R-075
2002, Louise Jivan Shah: Investigation and modelling of thermal conditions in low flow SDHW systems, R-034
2000, Alfred Heller: Large scale solar district heating - evaluation, modelling and designing, R-046
1998, Lin Qin: Analysis, modeling and optimum design of solar domestic hot water systems, R-22
The reports can be downloaded here