| 1 | Information systems and information technologies. | Book (1) and Books (2) |
| 2 | Availability of information technologies used in enterprises | Book (1) and Books (3) |
| 3 | Computer programs used in accommodation establishments and their sustainability | Books (2) and book (3) |
| 4 | Overview of Fidelio, Fidelio record-entry operations. | Book (1) and Books (2) |
| 5 | Booking procedures and a safe shutdown of the system operations program with Fidelio | Book (1) and Books (2) |
| 6 | General review. | Books (2) and book (3) |
| 7 | Electra overall presentation program | Book (1) and Books (2) |
| 8 | Electra program record-entry operations | Book (1) and Books (2) |
| 9 | Electra program, booking procedures and safe operation of the system with shutdown | Books (2) and book (3) |
| 10 | Sispar overall presentation program. | Books (2) and book (3) |
| 11 | Sispar program record-entry operations. | Book (1) and Books (2) |
| 12 | Booking procedures and a safe shutdown of the system operations program with Sispar | Book (1) and Books (2) |
| 13 | General again. | Book (1) and Books (2) |
| 14 | General again. | Book (1) and Books (2) |