did the one who discovered it publish any paper regarding this?
No
Carl Wilhelm Scheele
Scheele discovered oxygen (although Joseph Priestley published his findings first), and identified molybdenum, tungsten, barium, hydrogen, and chlorine before Humphry Davy, among others. 
where does most of the oxygen come from on earth The most amount of Oxygen comes from photosynthesis, which uses the energy of sunlight to produce oxygen from water and carbon dioxide. when was it discovered? In the year 1773. by whom? It was discovered independently by Carl Wilhelm Scheele, in Uppsala, in 1773 what are it's uses? Low Pressure Breathing gas in Modern Space Suits, Scuba Divers rely on artificially delivered Oxygen & Medically for Oxygen Masks among many other uses. is it toxic? Can be Toxic at elevated partial pressures, leading to convulsions and other health problems.
wiki:5348151
Carl Wilhelm Scheele [SEP] Introduction
Carl Wilhelm Scheele (, ; 9 December 1742 – 21 May 1786) was a German and Swedish Pomeranian pharmaceutical chemist. Isaac Asimov called him "hard-luck Scheele" because he made a number of chemical discoveries before others who are generally given the credit. For example, Scheele discovered oxygen (although Joseph Priestley published his findings first), and identified molybdenum, tungsten, barium, hydrogen, and chlorine before Humphry Davy, among others. Scheele discovered organic acids tartaric, oxalic, uric, lactic, and citric, as well as hydrofluoric, hydrocyanic, and arsenic acids. He preferred speaking German to Swedish his whole life, as German was commonly spoken among Swedish pharmacists.