- Troeng, E., and S. Linder. 1978. Gasutbyte hos ett 20-arigt tallbestand. IV: Ettariga barrs fotosyntes och transpiration iolika delar av tradkronan [Gas exchange in a 20-year-old stand of Scots pine. IV: Photosynthesis and transpiration within the crown of one tree]. Swed. Con. For. Proj. Internal Report 83. 20 p.
- Troeng, E., S. Linder, and B. Langstrom. 1979. Gasutbytet hos ett 20-arigt tallbestand. V: pilotstudie rorande margborreangrepps inverkan pa gasutbytet hos angripna skott under skadearet. Swed. Conifer. For. Proj., Internal Report. 91. 16 p.
- Troeng, E., and B. Langström. 1991. Gas exchange in young Scots pine following pruning of current shoots . Annales des Sciences Forestières 48:359-366.