▁M Sc ▁students ▁at ▁the ▁Department ▁of ▁Phys ical ▁Chem istry ▁of ▁Sof ia ▁University . ▁She ▁was ▁also ▁external ▁exam iner ▁for ▁Ph D ▁students ▁from ▁other ▁foreign ▁univers ities .( e . g . ▁Al ag appa ▁University , ▁Mad ur ai - K amar aj - Univers ity , ▁Central ▁Elect ro chem ical ▁Research ▁Institute ▁in ▁K ara ik udi , ▁T amil ▁N adu ▁– ▁India ). ▁ ▁In ▁ 1 9 8 6 ▁she ▁was ▁invited ▁as ▁a ▁Vis iting ▁Scient ist ▁to ▁Ky oto ▁University , ▁Institute ▁for ▁Chem ical ▁Research , ▁U ji , ▁Ky oto , ▁Japan , ▁to ▁the ▁Labor atory ▁of ▁Prof . ▁T . ▁T aken aka ▁as ▁well ▁as ▁to ▁the ▁University ▁of ▁Send ai ▁( T oh oku ), ▁Research ▁Institute ▁for ▁Min eral ▁D ress ing ▁and ▁Met all ur gy , ▁K ata hi ra , ▁Send ai , ▁Japan , ▁the ▁Labor atory ▁of ▁Prof . ▁S . ▁Us ui . ▁ ▁In ▁ 1 9 9 1 - 1 9 9 2 ▁ ▁she ▁was ▁awarded ▁a ▁Senior ▁Ful br ight ▁Fellow ship ▁and ▁worked ▁in ▁the ▁Fac ulty ▁of ▁Chem istry , ▁Ge or get own ▁University , ▁Washington ▁DC , ▁USA , ▁at ▁the ▁Labor atory ▁of ▁Prof . ▁Robert ▁de ▁Lev ie . From ▁ 1 9 9 5 ▁to ▁ 1 9 9 8 ▁▁ ▁Kais he va ▁was ▁the ▁Bulgar ian ▁co - ordin ator ▁of ▁a ▁successfully ▁completed ▁international