Product lines: what are the issues?

Elisabetta Di Nitto Alfonso Fuggetta Product lines: what are the issues? 51-53 1996 conf/ispw/1996 ISPW https://doi.org/10.1109/ISPW.1996.654368 https://doi.ieeecomputersociety.org/10.1109/ISPW.1996.654368 https://dl.acm.org/doi/10.5555/850995.855809 db/conf/ispw/ispw1996.html#NittoF96