Burki started his career in Switzerland for a year , until he returned to Paris to work in rotogravure from 1971 to 1979 . He started his career in Switzerland for a year until he returned to Paris from 1971 to 1979 to work in gravure .
Burki memulakan kerjayanya di Switzerland selama setahun, sehingga beliau kembali ke Paris untuk bekerja di rotogravure dari 1971 hingga 1979. Beliau memulakan kerjayanya di Switzerland selama setahun sehingga beliau kembali ke Paris dari 1971 hingga 1979 untuk bekerja di gravure.