LOS ANGELES (AP) — Debbie Reynolds died of a stroke and her daughter Carrie Fisher died of cardiac arrest, according to their death certificates. The death certificate lists Reynolds' son Todd Fisher as the notifying party, and says Reynolds had been in the entertainment business for 68 years. Fisher, best known for her role in the "Star Wars" saga, and Reynolds, who starred in "Singin' in the Rain," were mourned in a joint memorial at their neighboring homes on Thursday and had a joint funeral at a Hollywood Hills cemetery the next day.