Marcus Ejnarsson Carl Magnus Nilsson Antanas Verikas Screening Paper Formation Variations on Production Line. 511-520 2007 conf/ieaaie/2007 IEA/AIE http://dx.doi.org/10.1007/978-3-540-73325-6_51 db/conf/ieaaie/ieaaie2007.html#EjnarssonNV07