@Article{ Martín-fernández_Rico-Romero_RUIZ:237-263,

author = { Enrique Martín-fernández and Luis Rico-Romero and JUAN FRANCISCO RUIZ HIDALGO } ,

title = { Conversions Between Trigonometric Representation Systems by Pre-service Secondary School Teachers },

journal = { PNA },

year = { 2022 },

volume = { 16 },

pages = { 237-263 },

}