00399nas a2200145   4500000000100000000000100001008004100002260001900043100001900062700002300081700001800104700002000122245009900142300001200241       2021                            d  c28-29 May 20211 aGeorge Sharkov1 aChristina Todorova1 aGeorgi Koykov1 aGeorgi Zahariev00aHybrid Exercising for Cyber-Resilient Healthcare and  Cross-Sector Crisis Response Operability  a329-351