Complex sentence: Since 1984, he worked in the company "Agrodat", however, he was dismissed again in 1989, this time due to his critical article "Prognostika a přestavba" ("Forecasting and Reconstruction").
Split into simpler sentences: Since 1984, he worked in the company "Agrodat". However, he was dismissed again in 1989, this time due to his critical article "Prognostika a přestavba" ("Forecasting and Reconstruction").