Commentaries on these theoretical works were written as early as the 1370s.

During those years he published a number of theoretical and practical musical works.

It was also to this period that his principal theoretical works belong, which became classics and were translated into many languages.

Habermas's theoretical works are in the background of the interviews.

In his theoretical works, he laid the foundations of the Czech landscape ecology.

He is noted for his theoretical works on the physical limitations of antennas.

She has written several books; biographies, historical reports and theoretical works.

Probably the most valuable service he rendered to music was in his theoretical works.

There are many theoretical works on the subject, including a vast number of popular books and websites.

He then wrote his first theoretical works, including his most famous one Urban design prose.