In Russian. Berkovich, Lev Meikhovich. Conversion of ordinary linear differential equations. Kuibyshev: KSU, 1978 Preobrazovanie obyknovennykh lineynykh differentsialnykh uravneniy/Conversion of ordinary linear differential equations In Russian. All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU7667392