A method of printing a three-dimensional article (51, 82, 90) comprising: computing a sequence of back-projections describing the three-dimensional article (51, 82, 90) to be formed from different orientation angles of said article (51, 82, 90), defining a sequence of patterns of curing light 11, 20, 32) using said back-projections, and irradiating with each of said patterns of curing light (11, 20, 32) at the respective corresponding orientation angle and according to the defined sequence a liquid photoresponsive material (12, 22, 30, 40, 80, 91), or a thermoresponsive gel formed from a liquid photoresponsive material (12, 22, 30, 40, 80, 91) with thermoresponsive gelation properties, that is capable of alteration of its material phase upon irradiation by curing light (11, 20, 32), thereby selectively creating a three-dimensional distribution of alterations within the liquid photoresponsive medium (12, 22, 30, 40, 80, 91) which physically reproduces said three-dimensional article (51, 82, 90), thereby creating the three-dimensional article (51, 82, 90), wherein the liquid photoresponsive material or the thermoresponsive gel (12, 22, 30, 40, 80, 91) comprises a first photoinitiator in an amount such that an optical depth of penetration of the curing light (11, 20, 32) is larger than a fifth of a width (43, 61) of the three-dimensional article (51, 82, 90), wherein the liquid photoresponsive material (12, 22, 30, 40, 80, 91) has an optical transparency of at least 50% transmission between 350 nm and 450 nm at a thickness of the width (43, 61) of the three-dimensional article (51, 82, 90), or alternatively the thermoresponsive gel (12, 22, 30, 40, 80, 91) has an optical transparency of at least 50% transmission between 350 nm and 850 nm at a thickness of the width (43, 61) of the three-dimensional article (51, 82, 90), wherein the liquid photoresponsive material (12, 22, 30, 40, 80, 91) or the thermoresponsive gel (12, 22, 30, 40, 80, 91) has a scattering length larger than the width (43, 61) of the three-dimensional article (51, 82, 90), wherein the liquid photoresponsive material (12, 22, 30, 40, 80, 91) has a dynamic viscosity between 2 and 50 Pa·s at a temperature of 25°C measured with a cone-plate rheometer, or alternatively the thermoresponsive gel (12, 22, 30, 40, 80, 91) has a liquification temperature between 0°C and 40°C or a gelation temperature between 0°C and 40°C, and wherein the three-dimensional article (51, 82, 90) is formed in about l to 60 seconds. computing a sequence of back-projections describing the three-dimensional article (51, 82, 90) to be formed from different orientation angles of said article (51, 82, 90), defining a sequence of patterns of curing light 11, 20, 32) using said back-projections, and irradiating with each of said patterns of curing light (11, 20, 32) at the respective corresponding orientation angle and according to the defined sequence a liquid photoresponsive material (12, 22, 30, 40, 80, 91), or a thermoresponsive gel formed from a liquid photoresponsive material (12, 22, 30, 40, 80, 91) with thermoresponsive gelation properties, that is capable of alteration of its material phase upon irradiation by curing light (11, 20, 32), thereby selectively creating a three-dimensional distribution of alterations within the liquid photoresponsive medium (12, 22, 30, 40, 80, 91) which physically reproduces said three-dimensional article (51, 82, 90), thereby creating the three-dimensional article (51, 82, 90), wherein the liquid photoresponsive material or the thermoresponsive gel (12, 22, 30, 40, 80, 91) comprises a first photoinitiator in an amount such that an optical depth of penetration of the curing light (11, 20, 32) is larger than a fifth of a width (43, 61) of the three-dimensional article (51, 82, 90), wherein the liquid photoresponsive material (12, 22, 30, 40, 80, 91) has an optical transparency of at least 50% transmission between 350 nm and 450 nm at a thickness of the width (43, 61) of the three-dimensional article (51, 82, 90), or alternatively the thermoresponsive gel (12, 22, 30, 40, 80, 91) has an optical transparency of at least 50% transmission between 350 nm and 850 nm at a thickness of the width (43, 61) of the three-dimensional article (51, 82, 90), wherein the liquid photoresponsive material (12, 22, 30, 40, 80, 91) or the thermoresponsive gel (12, 22, 30, 40, 80, 91) has a scattering length larger than the width (43, 61) of the three-dimensional article (51, 82, 90), wherein the liquid photoresponsive material (12, 22, 30, 40, 80, 91) has a dynamic viscosity between 2 and 50 Pa·s at a temperature of 25°C measured with a cone-plate rheometer, or alternatively the thermoresponsive gel (12, 22, 30, 40, 80, 91) has a liquification temperature between 0°C and 40°C or a gelation temperature between 0°C and 40°C, and wherein the three-dimensional article (51, 82, 90) is formed in about l to 60 seconds.