1. P. Papillon, Contribution à l’amélioration de la technique du plancher solaire direct – Analyse de la solution “dalles minces” et gestion optimisée du chauffage d’appoint, MS Thesis in Civil Engineering and Housing Science, University of Savoie, 1992.
2. Assesment of the viability of hybrid geothermal heat pump systems with solar thermal collectors;Chiasson;ASHRAE Transactions,2003
3. D. Pahud, B. Lachal, Misure di un impianto di riscaldamenton con sonde geothermiche a Lugano, intermediate report, Energy research programme commissioned by the Federal Energy Board, Switzerland, 2002.
4. Design of closed loop heat exchangers;Reuss;International Summer School on Direct Application of Geothermal Energy,2000
5. Dossier Géothermie, Revue bimestrielle Systèmes solaires – L’observateur des énergies renouvelables, no. 148, 2002, pp. 20–60.